Marine waste heat collection system and flow control method of heating medium and intermediate medium

Abstract

The present application provides a marine waste heat collection system and a method for controlling the flow of heating medium and intermediate medium. The system comprises: a plurality of heating medium output channels corresponding to a plurality of energy conversion devices, one end of each heating medium output channel being connected to a corresponding energy conversion device, the energy conversion device being used to deliver heating medium to the heating medium output channels; a heat exchange device comprising a heating medium inlet, a heating medium outlet, a heated medium inlet, and a heated medium outlet, the other end of the heating medium output channel being connected to the heating medium inlet; and a medium delivery channel comprising a first delivery channel and a second delivery channel; one end of the first delivery channel being connected to the heated medium inlet and being used to deliver the heated medium to the heat exchange device, and one end of the second delivery channel being connected to the heated medium outlet and being used to deliver the heated medium heated by the heat exchange device. This application can achieve efficient utilization of waste heat.

Description

Technical Field

[0001] The present application relates to the field of ships, and more specifically, to a ship waste heat collection system and a flow control method for a heating medium and an intermediate medium. Background Art

[0002] In mechanical equipment such as ships, the engines generate a lot of waste heat, most of which is lost naturally. In order to cool the engines, further energy is consumed. Therefore, this will result in a large amount of energy waste and insufficient energy utilization. Summary of the Invention

[0003] The embodiments of the present application provide a ship waste heat collection system and a flow control method for a heating medium and an intermediate medium, thereby enabling efficient energy utilization and achieving energy conservation and emission reduction, at least to a certain extent.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0005] According to one aspect of an embodiment of the present application, a ship waste heat collection system is provided, comprising: a plurality of heating medium output channels, the plurality of heating medium output channels corresponding to a plurality of energy conversion devices, one end of each of the heating medium output channels being connected to the corresponding energy conversion device, the energy conversion device being used to transport heating medium to the corresponding heating medium output channel; a heat exchange device comprising a heating medium inlet, a heating medium outlet, a heated medium inlet and a heated medium outlet, the other end of the heating medium output channel being connected to the heating medium inlet, the heating medium outlet being used to output the heating medium after being used by the heat exchange device, the heat exchange device being used to transfer heat between media; a medium delivery channel comprising a first delivery channel and a second delivery channel; one end of the first delivery channel being connected to the heated medium inlet, the first delivery channel being used to transport the heated medium to the heat exchange device, one end of the second delivery channel being connected to the heated medium outlet, the second delivery channel being used to output the heated medium heated by the heat exchange device.

[0006] Optionally, based on the above-mentioned scheme, there are multiple heat exchange devices and multiple medium delivery channels; the multiple heating medium output channels correspond to the multiple heat exchange devices respectively, and the other end of each heating medium output channel is connected to the heating medium inlet of the corresponding heat exchange device; the multiple medium delivery channels correspond to the multiple heat exchange devices respectively, and one end of the first delivery channel of each medium delivery channel is connected to the heated medium inlet of the corresponding heat exchange device, and one end of the second delivery channel of each medium delivery channel is connected to the heated medium outlet of the corresponding heat exchange device.

[0007] Optionally, based on the above-mentioned scheme, the heating medium output channel is a heated cooling medium output channel, one end of each heating medium output channel is connected to the output end of the heated cooling medium of the corresponding energy conversion device, and the energy conversion device is used to transport the heated cooling medium to the corresponding heating medium output channel; the heat exchange device is a first heat exchanger.

[0008] Optionally, based on the above-mentioned scheme, the medium delivery channel is an intermediate medium delivery channel, and the other end of the first delivery channel is connected to the intermediate medium providing device. The system also includes: multiple exhaust pipes, the multiple exhaust pipes correspond to the multiple energy conversion devices respectively, and one end of each exhaust pipe is connected to the exhaust end of the corresponding energy conversion device; thermal equipment, the other end of each second delivery channel and the other end of each exhaust pipe are connected to the thermal equipment; the thermal equipment is used to integrate the waste heat of the medium provided by each exhaust pipe and the intermediate medium delivery channel to generate a final heating medium.

[0009] Optionally, based on the above scheme, the thermal equipment includes: a heating device, including a first heating medium inlet, a first heating medium outlet, a first heated medium inlet and a first heated medium outlet, the heating device being an exhaust gas boiler or a heater; the other end of the exhaust pipe is connected to the first heating medium inlet; a heated medium delivery channel, including a third delivery channel and a fourth delivery channel; one end of the third delivery channel is connected to the first heated medium inlet, the third delivery channel is used to deliver a predetermined heated medium to the heating device, one end of the fourth delivery channel is connected to the first heated medium outlet, and the fourth delivery channel is used to output the predetermined heated medium heated by the heating device; a second heat exchanger, including a second heating medium inlet, a second heating medium outlet, a second heated medium inlet and a second heated medium outlet; the other end of the fourth delivery channel is connected to the second heating medium inlet, the other end of the third delivery channel is connected to the second heating medium outlet; the other end of the second delivery channel is connected to the second heated medium inlet, and the second heated medium outlet is used to output the final heating medium.

[0010] Optionally, based on the above-mentioned scheme, there are multiple heating devices and multiple heated medium delivery channels; the multiple exhaust pipes correspond to the multiple heating devices respectively, and the other end of each exhaust pipe is connected to the first heating medium inlet of the corresponding heating device; the multiple heated medium delivery channels correspond to the multiple heating devices respectively, and one end of the fourth delivery channel of each heated medium delivery channel is connected to the first heated medium outlet of the corresponding heating device.

[0011] Optionally, based on the above-mentioned scheme, the system also includes multiple heating medium return channels and multiple first temperature-controlled valves, the multiple heating medium return channels correspond to the multiple first temperature-controlled valves respectively, and the multiple heating medium return channels correspond to the multiple heat exchange devices respectively; the heating medium return channel includes a first segment and a second segment, one end of the first segment of each heating medium return channel is connected to the heating medium outlet of the corresponding heat exchange device, the other end of the first segment of each heating medium return channel is connected to the first inlet of the corresponding first temperature-controlled valve, one end of the second segment of each heating medium return channel is connected to the outlet of the corresponding first temperature-controlled valve, and each heating medium output channel is also connected to the second inlet of the corresponding first temperature-controlled valve, and the first temperature-controlled valve is used to control the medium to flow from the first inlet or the second inlet to the second segment according to the temperature of the medium in the corresponding heating medium return channel.

[0012] Optionally, based on the above scheme, the system also includes a second temperature-controlled valve, the intermediate medium delivery channel also includes a fifth delivery channel, the fifth delivery channel includes a third segment and a fourth segment, one end of the third segment is connected to the second heated medium outlet, the other end of the third segment is connected to the first inlet of the second temperature-controlled valve, one end of the fourth segment is connected to the outlet of the second temperature-controlled valve, the second delivery channel is connected to the second inlet of the second temperature-controlled valve, and the second temperature-controlled valve is used to control the flow ratio of the medium flowing from the first inlet and the second inlet through the second temperature-controlled valve according to the temperature of the intermediate medium in the fifth delivery channel.

[0013] Optionally, based on the above solution, the fifth conveying channel is connected to a waste heat power generation device, so as to generate electricity using the final heating medium through the waste heat power generation device.

[0014] According to one aspect of an embodiment of the present application, a method for controlling the flow of a heating medium is provided, which is applied to a marine waste heat collection system as described in the above embodiment, and the method includes: when the temperature of the heating medium in the heating medium return channel does not reach a predetermined temperature threshold, connecting the second inlet of the first temperature-controlled valve to its outlet, and controlling the first inlet of the first temperature-controlled valve and the outlet to be in a cut-off state, so that the heating medium flows from the second inlet to the second segment of the heating medium return channel; when the temperature of the heating medium in the heating medium return channel reaches the predetermined temperature threshold, connecting the first inlet of the first temperature-controlled valve to its outlet, and controlling the second inlet of the first temperature-controlled valve and the outlet to be in a cut-off state, so that the heating medium flows from the first inlet to the second segment of the heating medium return channel.

[0015] According to one aspect of an embodiment of the present application, a method for controlling the flow rate of an intermediate medium is provided. The method is applied to the marine waste heat collection system as described in the above embodiment, and the method includes: obtaining the temperature of the intermediate medium in a fifth delivery channel; when the temperature of the intermediate medium does not reach a first temperature threshold, connecting the first inlet of the second temperature-controlled valve to its outlet at a maximum opening, and controlling the second inlet of the second temperature-controlled valve to be in a cut-off state; when the temperature of the intermediate medium reaches the first temperature threshold but does not reach the second temperature threshold, determining a first target opening and a second target opening based on the temperature of the intermediate medium, connecting the first inlet of the second temperature-controlled valve to its outlet at the first target opening, and connecting the second inlet of the second temperature-controlled valve to its outlet at the second target opening, the first target opening being negatively correlated with the temperature of the intermediate medium, and the second target opening being positively correlated with the temperature of the intermediate medium; when the temperature of the intermediate medium reaches the second temperature threshold, connecting the second inlet of the second temperature-controlled valve to its outlet at a maximum opening, and controlling the first inlet of the second temperature-controlled valve to be in a cut-off state.

[0016] According to one aspect of an embodiment of the present application, a computer-readable medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method described in the above embodiment is implemented.

[0017] According to one aspect of an embodiment of the present application, an electronic device is provided, comprising: one or more processors; a storage device for storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the methods described in the above embodiments.

[0018] In the technical solutions provided in some embodiments of the present application, since the system is provided with multiple heating medium output channels corresponding to multiple energy conversion devices, one end of each heating medium output channel is connected to the corresponding energy conversion device, and the heat exchange device used to transfer heat between media includes a heating medium inlet, a heating medium outlet, a heated medium inlet and a heated medium outlet, and the other end of the heating medium output channel is connected to the heating medium inlet. Therefore, the heating medium from each energy conversion device can be transported to the heat exchange device through the corresponding heating medium output channel to provide heat to the heat exchange device; since the medium transport channel includes a first transport channel for transporting the heated medium to the heat exchange device and a second transport channel for outputting the heated medium heated by the heat exchange device, one end of the first transport channel is connected to the heated medium inlet, and one end of the second transport channel is connected to the heated medium outlet. Therefore, the heated medium can be transported to the heat exchange device through the first transport channel, and heat is transferred through the heat exchange device to obtain a heated heated medium, and then the heated heated medium can be output outward through the second transport channel and utilized. Therefore, the present application realizes the full utilization of the heat of the heating medium generated by the energy conversion equipment, and since the more heat the medium has, the higher the utilization rate of it, therefore, the integration of the heat of the heating medium generated by multiple energy conversion equipment is realized through multiple heating medium output channels, heat exchange equipment and medium conveying channels, which can increase the total heat and total heat load of the medium finally output, thereby improving the utilization rate of heat, realizing efficient utilization of energy, and achieving energy conservation and emission reduction.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a marine waste heat collection system according to an embodiment of the present application.

[0022] Figure 2 According to one embodiment of the present application Figure 1 The structural schematic diagram of the marine waste heat collection system at the dotted box A is shown.

[0023] Figure 3 According to one embodiment of the present application Figure 1 The structural schematic diagram of the marine waste heat collection system at the dotted box B is shown.

[0024] Figure 4 A flow chart of a method for controlling the flow of a heating medium according to an embodiment of the present application is shown.

[0025] Figure 5 A flow chart of a method for controlling the flow of an intermediate medium according to an embodiment of the present application is shown.

[0026] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown.

[0027] The following are the descriptions of the reference numerals:

[0028] 11-energy conversion device, 12-heated cooling medium output channel, 13-medium conveying channel, 131-first conveying channel, 132-second conveying channel, 133-fifth conveying channel, 1331-third segment, 1332-fourth segment, 14-first heat exchanger, 141-heating medium inlet, 142-heating medium outlet, 143-heated medium inlet, 144-heated medium outlet, 15-heating medium return channel, 151-first segment, 152-second segment, 16-first temperature control valve, 17-first stop valve, 18-second stop valve, 19-first position, 20-second position, 21-exhaust pipeline, 22-medium input channel, 23-intermediate medium circulation pump, 24-second heat exchanger, 241-second heating medium inlet, 242-second heating medium outlet, 243-second heated medium inlet, 244-second heated medium outlet, 25-second temperature control valve, 2 6-Heated medium delivery channel, 261-Third delivery channel, 2611-Third delivery channel branch, 262-Fourth delivery channel, 27-Heating device, 271-First heating medium inlet, 272-First heating medium outlet, 273-First heated medium inlet, 274-First heated medium outlet, 28-Discharge pipeline, 29-Cogeneration device, 291-Heat medium inlet, 292-Heat medium outlet, 293-Seawater inlet, 294-Seawater outlet, 30-Submarine gate, 31-Seawater main pipe, 32-Seawater delivery pipe, 33-Seawater cooling pump, 34-Seawater discharge pipe, 35-Third position, 36-Fourth position, 601-CPU, 602-ROM, 603-RAM, 604-Bus, 605-I / O interface, 606-Input part, 607-Output part, 608-Storage part, 609-Communication part, 610-Drive, 611-Removable medium. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0030] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0031] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or portion of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal. It can be implemented in whole or in part using software, hardware (such as processing circuits or memory), or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the functionality of the module or unit.

[0032] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0033] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0034] According to one aspect of the present application, a marine waste heat collection system is provided. The marine waste heat collection system provided herein can be used in any mechanical device, such as a ship, that requires an engine or other energy conversion device. It can be applied to cement transport vessels as well as other types of ships. The marine waste heat collection system provided herein can be installed on a ship.

[0035] Figure 1 The figure is a schematic diagram of the overall structure of a marine waste heat collection system according to an embodiment of the present application. Figure 2 According to one embodiment of the present application Figure 1 The structural schematic diagram of the marine waste heat collection system at the dotted box A is shown. Figure 3 According to one embodiment of the present application Figure 1 The structural diagram of the marine waste heat collection system is shown in the dotted box B. Figure 1-Figure 3 As shown, the marine waste heat collection system may include multiple energy conversion devices 11. An energy conversion device 11 is any device capable of energy conversion, such as an engine or a generator. The different energy conversion devices 11 may be of the same or different types. For example, the multiple energy conversion devices 11 may all be engines or generators, or may include at least one engine and at least one generator. Figure 1 Three energy conversion devices 11 are shown. It can be seen that the topmost energy conversion device 11 has different dimensions than the other energy conversion devices 11. The topmost energy conversion device 11 may be a generator, while the other energy conversion devices 11 below it may be engines. The marine waste heat collection system also includes multiple heating medium output channels, each corresponding to one of the energy conversion devices 11. One end of each heating medium output channel is connected to a corresponding energy conversion device 11. Each energy conversion device 11 is configured to deliver heating medium to the corresponding heating medium output channel, thereby delivering the heating medium from the energy conversion device 11 through the heating medium output channel.

[0036] The heating medium is a medium that carries waste heat or residual heat generated by the energy conversion device 11 .

[0037] The heating medium can be, for example, a heated cooling medium. The heated cooling medium can be formed by a cooling medium used to cool an engine or generator after absorbing heat in the engine or generator. The cooling medium can be the cylinder jacket water used to cool the cylinder jacket of the engine or generator. In this case, the heating medium output channel can be a heated cooling medium output channel 12. One end of each heating medium output channel is connected to the output end of the heated cooling medium of the corresponding energy conversion device 11. The energy conversion device 11 is used to transport the heated cooling medium to the corresponding heating medium output channel.

[0038] The heating medium can also be waste gas or tail gas, and the heating medium output channel can also be an exhaust pipe. One end of each heating medium output channel is connected to the exhaust end of the corresponding energy conversion device, and the energy conversion device is used to transport waste gas to the corresponding heating medium output channel.

[0039] The marine waste heat collection system may further include a heat exchange device for transferring heat between media. When the heating medium is a heated cooling medium, the heat exchange device may be a first heat exchanger 14; when the heating medium is exhaust gas, the heat exchange device may be an exhaust gas boiler or heater.

[0040] Below, the solution of the embodiment of the present application is described in detail by taking the heating medium as the heated cooling medium as an example.

[0041] The heat exchange device, i.e., the first heat exchanger 14, may include a heating medium inlet 141, a heating medium outlet 142, a heated medium inlet 143, and a heated medium outlet 144. The heating medium output channel, i.e., the other end of the heated cooling medium output channel 12, may be connected to the heating medium inlet 141. Thus, the heated cooling medium carrying heat generated in the energy conversion device 11 may be input into the first heat exchanger 14 in sequence through the heated cooling medium output end of the energy conversion device 11, the heated cooling medium output channel 12, and the heating medium inlet 141 of the first heat exchanger 14. The heating medium outlet 142 is used to output the heating medium after it has been used by the heat exchange device. That is, after the higher-temperature heating medium exchanges heat with the lower-temperature heated medium within the heat exchange device, the heat content and temperature of the heating medium decrease. The reduced-heat and reduced-temperature heating medium (heated cooling medium) can be output to the central cooling water system through the heating medium outlet 142, so that the heated cooling medium can be re-input into the energy conversion device 11 after cooling.

[0042] Only one heat exchange device may be provided, so that the other ends of all heating medium output channels are connected to the heating medium inlet of the same heat exchange device.

[0043] The marine waste heat collection system may also include a medium transport channel 13, which may include a first transport channel 131 and a second transport channel 132. One end of the first transport channel 131 is connected to the heated medium inlet 143 of the heat exchanger. The first transport channel 131 is used to transport the heated medium to the heat exchanger. The heated medium is a working fluid, which can be water, oil, air, other gases, or other types of media. The heated medium can be output by an external device and delivered to the heat exchanger through the first transport channel 131. One end of the second transport channel 132 is connected to the heated medium outlet 144 of the heat exchanger. The second transport channel 132 is used to output the heated medium heated by the heat exchanger. Therefore, the heat (energy) of the heating medium of all energy conversion devices can be transferred to the heated medium through the heat exchanger, achieving integrated collection of the waste heat of the energy conversion devices. The heated medium output from the second transport channel 132 can be directly utilized, for example, for heating.

[0044] There may be multiple heat exchange devices, that is, multiple first heat exchangers 14 may be provided.

[0045] Multiple heating medium output channels correspond to multiple heat exchange devices respectively, and multiple heat exchange devices also correspond to multiple energy conversion devices 11 respectively. The other end of each heating medium output channel is connected to the heating medium inlet 141 of the corresponding heat exchange device. The heat exchange device can be set near the energy conversion device 11. In this way, the length of the heating medium output channel connecting the energy conversion device 11 and the heat exchange device can be very short, which can reduce heat loss.

[0046] There can also be multiple medium conveying channels 13; multiple medium conveying channels 13 correspond to multiple heat exchange devices respectively, one end of the first conveying channel 131 of each medium conveying channel 13 is connected to the heated medium inlet 143 of the corresponding heat exchange device, and one end of the second conveying channel 132 of each medium conveying channel 13 is connected to the heated medium outlet 144 of the corresponding heat exchange device.

[0047] The medium delivery channel 13 may be an intermediate medium delivery channel, which is used to deliver the intermediate medium. The other end of the first delivery channel 131 may be connected to an intermediate medium providing device.

[0048] The intermediate medium supply device can be a waste heat power generation device 29; the waste heat power generation device 29 can be, for example, an organic Rankine cycle (ORC) waste heat generator. In this case, the intermediate medium transported through the intermediate medium transport channel can be water, which can be converted into hot water after passing through the heat exchange device. The first transport channels 131 of all medium transport channels 13 can be completely independent or interconnected; the second transport channels 132 of all medium transport channels 13 can be completely independent or interconnected. For example, multiple heat exchange devices can be arranged in descending order of distance from the intermediate medium supply device. The first transport channel 131 corresponding to the heat exchange device farthest from the intermediate medium supply device can serve as the first main transport channel for transporting the intermediate medium. The first transport channels 131 corresponding to other heat exchange devices can be connected to the first main transport channel near the corresponding heat exchange device, thereby obtaining the intermediate medium from the first main transport channel. The advantage of this is that the length of the pipeline in the cabin can be reduced, thereby saving costs. Similarly, multiple heat exchange devices can be arranged in sequence from far to near according to the distance from the intermediate medium providing device. If the intermediate medium needs to be transported to a position farther away than the farthest intermediate medium providing device (the distance between this position and the intermediate medium providing device is greater than the distance between the heat exchange device farthest from the intermediate medium providing device and the intermediate medium providing device), then the second transport channel 132 corresponding to the heat exchange device closest to the intermediate medium providing device can be used as the second main transport channel for transporting the intermediate medium, and the second transport channels 132 corresponding to other heat exchange devices can be connected to the second main transport channel near the corresponding heat exchange device. The advantage of doing this is that the length of the pipeline can be reduced, thereby saving material costs, and the pipeline can be easier to lay, reducing the construction difficulty of laying the pipeline. In addition, since the length of the pipeline is shorter, it can also reduce the occupation of the limited space on the ship.

[0049] An intermediate medium circulation pump 23 can be set on the intermediate medium delivery channel, which is used to deliver and circulate the intermediate medium. The intermediate medium circulation pump 23 can be set on the second delivery channel 132. For example, based on the predetermined position of the second main delivery channel, the intermediate medium circulation pump 23 can be set on the side of the predetermined position of the second main delivery channel away from the intermediate medium providing device. The predetermined position of the second main delivery channel can be the connecting position between the second delivery channel 132 corresponding to the heat exchange device farthest from the intermediate medium providing device and the second main delivery channel.

[0050] Of course, an intermediate medium circulation pump 23 may be separately provided on each intermediate medium delivery channel, and the intermediate medium of all intermediate medium delivery channels may be collected and outputted through the same pipeline.

[0051] The intermediate medium circulation pump 23 may also have a pressurizing function, thereby outputting a high-temperature and high-pressure intermediate medium. The intermediate medium circulation pump 23 may also be referred to as an intermediate heating water circulation pump.

[0052] The marine waste heat collection system may further include multiple heating medium return channels 15 and multiple first temperature control valves 16. The multiple heating medium return channels 15 correspond to the multiple first temperature control valves 16, and the multiple heating medium return channels 15 correspond to the multiple heat exchange devices. In other words, in this application, the energy conversion device 11, the heating medium output channel, the heating medium return channel 15, and the first temperature control valve 16 may correspond to each other one by one.

[0053] The heating medium return channel 15 may include a first section 151 and a second section 152. One end of the first section 151 of each heating medium return channel 15 is connected to the heating medium outlet 142 of the corresponding heat exchange device, and the other end of the first section 151 of each heating medium return channel 15 is connected to the first inlet of the corresponding first temperature control valve 16. One end of the second section 152 of each heating medium return channel 15 is connected to the outlet of the corresponding first temperature control valve 16. The other end of the second section 152 of each heating medium return channel 15 can be connected to the central cooling water system, so that the heated cooling medium passing through the first temperature control valve 16 and the second section 152 of the heating medium return channel 15 is recovered to the central cooling water system. After being processed by the central cooling water system, it can be input into the energy conversion device 11 through the medium input channel 22.

[0054] Each heating medium output channel is also connected to the second inlet of the corresponding first temperature-controlled valve 16. Specifically, each heating medium output channel can be connected to the second inlet of the corresponding first temperature-controlled valve 16 at a second position 20. A first shut-off valve 17 can be disposed between the second position 20 of each heating medium output channel and the heating medium inlet 141 of the corresponding first heat exchanger 14. A second shut-off valve 18 can be disposed in the first segment 151 of the heating medium return channel 15. Both the first shut-off valve 17 and the second shut-off valve 18 have the function of controlling fluid flow and regulating flow. The first temperature-controlled valve 16 can collect the medium temperature from the first position 19 of the second segment 152 of the corresponding heating medium return channel 15 and control the first temperature-controlled valve 16 based on the temperature. The first temperature-controlled valve 16 can control the heating medium to be output sequentially through the heating medium output channel, the channel between the second position 20 of the heating medium output channel and the corresponding first temperature-controlled valve 16, and the second segment 152 of the corresponding heating medium return channel 15. In this case, the heating medium is not used by the heat exchange device. The first temperature-controlled valve 16 can also control the heating medium to be output sequentially through the heating medium output channel and the heating medium return channel 15. In this case, the heating medium is used by the heat exchange device. Therefore, the first temperature-controlled valve 16 can control the medium to flow from the first inlet or the second inlet to the second segment 152 according to the temperature of the medium in the corresponding heating medium return channel 15.

[0055] The marine waste heat collection system may further include a plurality of exhaust pipes 21 and thermal equipment. The plurality of exhaust pipes 21 correspond to the plurality of energy conversion devices 11 respectively, and one end of each exhaust pipe 21 is connected to the exhaust end of the corresponding energy conversion device 11 .

[0056] The other end of each second delivery channel 132 and the other end of each exhaust pipeline 21 can be connected to the thermal equipment; the thermal equipment is used to integrate the waste heat of the medium provided by each exhaust pipeline and the intermediate medium delivery channel, and can couple the waste heat of the flue gas from each energy conversion device 11 with the waste heat of the heated cooling medium to produce the final heating medium. The thermal equipment can be an exhaust gas boiler or a heater, wherein the exhaust gas boiler can be a steam exhaust gas boiler capable of generating steam, and the heater can be a hot oil heater capable of generating hot oil or a hot water heater capable of generating hot water. In this way, the energy of the exhaust gas in the exhaust pipeline 21 can be integrated with the energy of the intermediate medium delivery channel. It is easy to understand that the multiple exhaust pipelines 21 can only be connected to some of the energy conversion devices 11, or the heat of the exhaust gas generated by only some of the energy conversion devices 11 can be utilized.

[0057] Specifically, the thermal equipment may include a heating device 27 .

[0058] The heating device 27 may include a first heating medium inlet 271, a first heating medium outlet 272, a first heated medium inlet 273 and a first heated medium outlet 274. The heating device 27 may be an exhaust gas boiler or a heater. The exhaust gas boiler may be a steam exhaust gas boiler capable of generating steam, and the heater may be a hot oil heater or a hot water heater. The other end of the exhaust pipe 21 is connected to the first heating medium inlet 271 of the heating device 27, thereby transporting high-temperature exhaust gas to the heating device 27 through the exhaust pipe 21.

[0059] The other end of the second conveying channel 132 can be connected to the first heated medium inlet 273. At this time, the heated medium output from the second conveying channel 132 can be directly conveyed to the heating device 27, and the heating device 27 uses the exhaust gas to heat it again, and finally the final heated medium is output and used through the first heated medium outlet 274.

[0060] When there is only one heating device 27 , the exhaust gas from each exhaust pipe 21 can be combined through a manifold and then input into the heating device 27 .

[0061] The thermal equipment may further include a heated medium delivery channel 26 and a second heat exchanger 24. The heated medium delivery channel 26 may include a third delivery channel 261 and a fourth delivery channel 262. One end of the third delivery channel 261 is connected to the first heated medium inlet 273 and is used to deliver the predetermined heated medium to the heating device 27. One end of the fourth delivery channel 262 is connected to the first heated medium outlet 274 and is used to output the predetermined heated medium heated by the heating device 27. The predetermined heated medium may be various types of media, such as water, oil, air, and steam.

[0062] The second heat exchanger 24 may include a second heating medium inlet 241, a second heating medium outlet 242, a second heated medium inlet 243 and a second heated medium outlet 244; the other end of the fourth delivery channel 262 is connected to the second heating medium inlet 241, so that the predetermined heated medium can be input into the second heat exchanger 24, and the other end of the third delivery channel 261 is connected to the second heating medium outlet 242, so that the predetermined heated medium after being used by the second heat exchanger 24 is returned to the heating device 27; the other end of the second delivery channel 132 can be connected to the second heated medium inlet 243, and the second heated medium outlet 244 is used to output the final heating medium.

[0063] The heating device 27 can be multiple (such as Figure 1(See the three shown in the figure). The different heating devices 27 can be of the same type. For example, all heating devices 27 can be exhaust gas boilers. Multiple exhaust pipes 21 correspond to multiple heating devices 27, respectively. The other end of each exhaust pipe 21 is connected to the first heating medium inlet 271 of the corresponding heating device 27. This prevents mixing of exhaust gases from different exhaust pipes 21, improves environmental protection, and complies with relevant laws and regulations.

[0064] There may be multiple heated medium delivery channels 26, each corresponding to a plurality of heating devices 27. One end of the fourth delivery channel 262 of each heated medium delivery channel 26 is connected to the first heated medium outlet 274 of the corresponding heating device 27. Specifically, the fourth delivery channel 262 corresponding to the heating device 27 farthest from the second heat exchanger 24 can serve as a fourth main delivery channel between each heating device 27 and the second heat exchanger 24. The fourth delivery channels 262 corresponding to each other heating device 27 are connected to the fourth main delivery channel, thereby delivering the predetermined heated medium heated by the heating device 27 to the second heat exchanger 24 via the fourth main delivery channel. Similarly, the third delivery channel 261 corresponding to the heating device 27 farthest from the second heat exchanger 24 can serve as a third main delivery channel between each heating device 27 and the second heat exchanger 24. The third delivery channels 261 corresponding to each other heating device 27 are connected to the third main delivery channel, thereby enabling the second heat exchanger 24 to deliver the predetermined heated medium to the heating device 27 via the third main delivery channel.

[0065] The marine waste heat collection system may further include a plurality of discharge pipes 28 corresponding to the plurality of heating devices 27 , one end of each discharge pipe 28 being connected to the corresponding heating device 27 and the other end being connected to the atmosphere for discharging exhaust gas.

[0066] When the heating device 27 is an exhaust gas boiler, the predetermined heated medium in the third delivery channel 261 is steam. The third delivery channel 261 may further include a third delivery channel branch 2611. The steam may be delivered to the atmospheric condenser through the third delivery channel branch 2611 and enter the hot well. Then the medium hot well enters the water pump and is finally delivered to the exhaust gas boiler again.

[0067] The second heat exchanger 24 fully integrates and utilizes the waste heat of the flue gas and the waste heat of the jacket water, and improves the stability of the final heating medium.

[0068] The system may further include a second temperature-controlled valve 25, and the intermediate medium delivery channel further includes a fifth delivery channel 133. The fifth delivery channel 133 includes a third segment 1331 and a fourth segment 1332. One end of the third segment 1331 is connected to the second heated medium outlet 244, and the other end of the third segment 1331 is connected to the first inlet of the second temperature-controlled valve 25. One end of the fourth segment 1332 is connected to the outlet of the second temperature-controlled valve 25, and the other end of the fourth segment 1332 can be connected to the heat medium inlet 291 of the waste heat power generation device 29, thereby inputting the final heating medium into the waste heat power generation device 29; the second delivery channel 132 is connected to the second inlet of the second temperature-controlled valve 25 at the fourth position 36. The second temperature-controlled valve 25 can collect the temperature of the medium in the third position 35 of the fourth segment 1332 and control the flow rate based on the temperature to ensure that the temperature and heat of the final heating medium are not too high. The second temperature-controlled valve 25 can be used to control the flow ratio of the medium flowing from the first inlet to the second inlet through the second temperature-controlled valve 25 according to the temperature of the intermediate medium in the fifth delivery channel 133, that is, the medium flowing into the fourth segment 1332 can be made to come only from the third segment 1331, or the medium flowing into the fourth segment 1332 can be made to come only directly from the second delivery channel 132, or the medium flowing into the fourth segment 1332 can include both the medium from the third segment 1331 and the second delivery channel 132, and the medium from these two channels accounts for a certain proportion in the medium flowing into the fourth segment 1332.

[0069] The fifth conveying channel 133 can be connected to the waste heat power generation device 29, and the final heating medium can be input into the waste heat power generation device 29 through the fifth conveying channel 133, so that the waste heat power generation device 29 uses the final heating medium to generate electricity. After using the final heating medium, the waste heat power generation device 29 can convey it to the first conveying channel 131 through its heat medium outlet 292, thereby realizing the recycling of waste heat.

[0070] Please continue to see Figure 1 As shown, the system may further include a seabed gate 30, a seawater main pipe 31, a seawater delivery pipe 32, a seawater cooling pump 33 provided on the seawater delivery pipe 32, and a seawater discharge pipe 34. The two ends of the seawater delivery pipe 32 are respectively connected to the seawater main pipe 31 and the seawater inlet 293 of the waste heat power generation device 29, and one end of the seawater discharge pipe 34 is connected to the seawater outlet 294 of the waste heat power generation device 29.

[0071] The seawater main pipe 31 introduces seawater through the seabed gate 30. The seawater enters the seawater delivery pipe 32 through the seawater main pipe 31 and is input into the waste heat power generation device 29 through the seawater cooling pump 33 to cool the waste heat power generation device 29. Finally, the seawater used by the waste heat power generation device 29 is discharged overboard of the ship through the seawater discharge pipe 34.

[0072] This application also provides a method for controlling the flow rate of a heating medium, which is applicable to the marine waste heat collection system described in the above embodiment. Specifically, the method for controlling the flow rate of the heating medium can be performed by the first temperature-controlled valve 16 of the marine waste heat collection system in the above embodiment. The first temperature-controlled valve 16 can include a controller, which can be a single-chip microcomputer.

[0073] Figure 4 A flow chart showing a method for controlling the flow of a heating medium according to an embodiment of the present application is shown. Figure 4 It can be seen that the flow control method of the heating medium may include the following steps:

[0074] In step S410, when the temperature of the heating medium in the heating medium return channel does not reach a predetermined temperature threshold, the second inlet of the first temperature control valve is connected to its outlet, and the first inlet of the first temperature control valve and its outlet are controlled to be in a cut-off state, so that the heating medium flows from the second inlet to the second segment of the heating medium return channel.

[0075] The predetermined temperature threshold can be 68 degrees Celsius or other temperature values. When the temperature of the heating medium in the heating medium return channel does not reach the predetermined temperature threshold, only the heating medium flowing into the second inlet of the first temperature control valve 16 can enter the second section 152 of the heating medium return channel 15, that is, only the heating medium in the heating medium output channel that has not entered the heat exchange equipment can be transported to the second section 152.

[0076] In step S420, when the temperature of the heating medium in the heating medium return channel reaches a predetermined temperature threshold, the first inlet of the first temperature control valve is connected to its outlet, and the second inlet of the first temperature control valve and its outlet are controlled to be in a cut-off state, so that the heating medium flows from the first inlet to the second segment of the heating medium return channel.

[0077] When the temperature of the heating medium in the heating medium return channel reaches a predetermined temperature threshold, only the heating medium flowing in from the first inlet of the first temperature control valve 16 can enter the second section 152 of the heating medium return channel 15, that is, only the heating medium in the heating medium output channel that has been used by the heat exchange equipment can be transported to the second section 152.

[0078] In the related art, in order to ensure that the temperature of the heating medium provided to the heat exchange equipment can meet the requirements, the opening of the valve on the heating medium input to the heat exchange equipment cannot be too large, and these valves need to be manually adjusted; however, the present application uses the first temperature control valve for control. As long as the temperature of the heating medium in the heating medium return channel can meet the requirements, the heating medium can be allowed to be delivered to the heat exchange equipment, thereby fully utilizing the heat of the heating medium. Moreover, since the first temperature control valve can be automatically controlled, the intelligence and automation level of the control can be improved, saving labor costs.

[0079] This application also provides a method for controlling the flow rate of an intermediate medium, which is applicable to the marine waste heat collection system described in the above embodiment. Specifically, the method for controlling the flow rate of the intermediate medium can be performed by the second temperature-controlled valve 25 in the marine waste heat collection system described in the above embodiment. The second temperature-controlled valve 25 can include a controller, which can be a single-chip microcomputer.

[0080] Figure 5 Flow chart showing a method for controlling the flow of an intermediate medium according to an embodiment of the present application. Figure 5 As shown, the flow control method of the intermediate medium may specifically include the following steps:

[0081] Step S510: obtaining the temperature of the intermediate medium in the fifth delivery channel.

[0082] The temperature of the medium in the third position 35 located in the fourth segment 1332 can be obtained.

[0083] Step S520 : When the temperature of the intermediate medium does not reach the first temperature threshold, the first inlet and the outlet of the second temperature control valve are connected at the maximum opening, and the second inlet and the outlet of the second temperature control valve are controlled to be in a cut-off state.

[0084] When the temperature of the intermediate medium does not reach the first temperature threshold, only the medium that has exchanged heat through the second heat exchanger 24 is allowed to pass through the second temperature control valve 25 and enter the waste heat power generation device 29 to ensure that the medium entering the waste heat power generation device 29 has sufficient heat.

[0085] In step S530, when the temperature of the intermediate medium reaches the first temperature threshold and does not reach the second temperature threshold, a first target opening and a second target opening are determined according to the temperature of the intermediate medium, the first inlet of the second temperature control valve is connected to its outlet at the first target opening, and the second inlet of the second temperature control valve is connected to its outlet at the second target opening, the first target opening is negatively correlated with the temperature of the intermediate medium, and the second target opening is positively correlated with the temperature of the intermediate medium.

[0086] The second temperature threshold may be greater than the first temperature threshold.

[0087] When the temperature of the intermediate medium reaches the first temperature threshold and does not reach the second temperature threshold, only the medium that has exchanged heat through the second heat exchanger 24 and the intermediate medium in the second delivery channel 132 can be allowed to enter the waste heat power generation device 29 through the second temperature control valve 25. The higher the temperature, the smaller the flow rate of the medium that has exchanged heat through the second heat exchanger 24 and is allowed to enter the waste heat power generation device 29 through the second temperature control valve 25. The higher the temperature, the greater the flow rate of the intermediate medium in the second delivery channel 132 and is allowed to enter the waste heat power generation device 29 through the second temperature control valve 25, thereby ensuring that the heat of the medium entering the waste heat power generation device 29 is maintained at a reasonable level.

[0088] Step S540 : When the temperature of the intermediate medium reaches a second temperature threshold, the second inlet and the outlet of the second temperature control valve are connected at the maximum opening, and the first inlet and the outlet of the second temperature control valve are controlled to be in a cut-off state.

[0089] When the temperature of the intermediate medium reaches the second temperature threshold, it means that the temperature of the intermediate medium is too high. It is necessary to only allow the intermediate medium in the second delivery channel 132 to enter the waste heat power generation device 29 through the second temperature control valve 25, and not allow the medium that has exchanged heat through the second heat exchanger 24 to enter the waste heat power generation device 29 through the second temperature control valve 25, so as to avoid excessive heat carried by the medium entering the waste heat power generation device 29.

[0090] The present application also provides a control method for an intermediate medium circulation pump, which can be applied to the marine waste heat collection system as described in the above embodiment to control the intermediate medium circulation pump 23 in the marine waste heat collection system.

[0091] The control method of the intermediate medium circulation pump may include: obtaining a parameter value corresponding to a driving state parameter of a ship, wherein a marine waste heat collection system including the intermediate medium circulation pump is located on the ship; determining a control parameter value of the intermediate medium circulation pump according to the parameter value corresponding to the driving state parameter; and controlling the intermediate medium circulation pump according to the control parameter value.

[0092] The ship's running state parameter may be speed or acceleration. The control parameter value of the intermediate medium circulation pump may be the power value of the intermediate medium circulation pump.

[0093] In one embodiment of the present application, the control parameter value of the intermediate medium circulation pump is determined based on the parameter value corresponding to the driving state parameter, including: if the parameter value corresponding to the driving state parameter does not reach the preset parameter threshold, the control parameter value of the intermediate medium circulation pump is determined as the first control parameter value; if the parameter value corresponding to the driving state parameter reaches the preset parameter threshold, the control parameter value of the intermediate medium circulation pump is determined as the second control parameter value, wherein the second control parameter value is greater than the first control parameter value.

[0094] In one embodiment of the present application, the control parameter value of the intermediate medium circulation pump is determined according to the parameter value corresponding to the driving state parameter, including: determining the target parameter value interval to which the parameter value belongs according to the parameter value corresponding to the driving state parameter; querying the control parameter value corresponding to the target parameter value interval in a preset parameter value interval and control parameter value correspondence table as the control parameter value of the intermediate medium circulation pump, wherein the preset parameter value interval and control parameter value correspondence table is used to store the correspondence between each parameter value interval and the control parameter value.

[0095] A plurality of different parameter value intervals may be preset, and the different parameter value intervals do not overlap. The preset parameter value interval and control parameter value correspondence table may store the control parameter value corresponding to each parameter value interval.

[0096] In one embodiment of the present application, the control parameter value of the intermediate medium circulation pump is determined according to the parameter value corresponding to the driving state parameter, including: calculating the control parameter value of the intermediate medium circulation pump according to the parameter value corresponding to the driving state parameter through a preset formula.

[0097] A formula that can express the relationship between the parameter value corresponding to the driving state parameter and the control parameter value can be preset, and the control parameter value can be calculated using the preset formula.

[0098] In the above embodiment, there may be a positive correlation between the parameter value corresponding to the driving state parameter and the control parameter value, that is, the larger the parameter value corresponding to the driving state parameter is, the larger the control parameter value is.

[0099] For example, the higher the speed or acceleration of the ship, the greater the power value of the intermediate medium circulation pump.

[0100] Since the higher the speed or acceleration of the ship, the more heat the intermediate medium generates, at this time, by setting a larger control parameter value (such as the power value of the intermediate medium circulation pump), the circulation of the intermediate medium can be accelerated, and the recovery of waste heat can be accelerated, thereby achieving more effective utilization of the waste heat.

[0101] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown.

[0102] It should be noted that Figure 6 The computer system 600 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0103] like Figure 6As shown, computer system 600 includes CPU 601, which can perform various appropriate actions and processes according to programs stored in ROM 602 or programs loaded from storage unit 608 into RAM 603, such as executing the methods described in the above embodiments. RAM 603 also stores various programs and data required for system operation. CPU 601, ROM 602, and RAM 603 are connected to each other via bus 604. I / O interface 605 is also connected to bus 604.

[0104] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, mouse, and the like; an output section 607 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and speakers; a storage section 608 including a hard disk; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. Removable media 611, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 610 as needed, so that computer programs read from the media can be installed in the storage section 608 as needed.

[0105] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 609, and / or installed from a removable medium 611. When the computer program is executed by the CPU 601, the various functions defined in the system of the present application are performed.

[0106] It should be noted that the computer-readable medium described in the embodiments of this application may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal transmitted in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, program segment, or part of the code, and the above-mentioned module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0108] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. In some cases, the names of these units do not constitute limitations on the units themselves.

[0109] As one aspect, the present application further provides a computer-readable medium, which may be included in the electronic device described in the above embodiments, or may exist independently without being incorporated into the electronic device. The computer-readable medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device implements the method described in the above embodiments.

[0110] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0111] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes a number of instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0112] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.

[0113] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A marine waste heat collection system, characterized in that: include: a plurality of heating medium output channels, each corresponding to a plurality of energy conversion devices, one end of each heating medium output channel being connected to the corresponding energy conversion device, the energy conversion device being used to deliver heating medium to the corresponding heating medium output channel; A heat exchange device comprising a heating medium inlet, a heating medium outlet, a heated medium inlet, and a heated medium outlet, wherein the other end of the heating medium output channel is connected to the heating medium inlet, the heating medium outlet is used to output the heating medium after being used by the heat exchange device, and the heat exchange device is used to transfer heat between media; a medium delivery channel, comprising a first delivery channel and a second delivery channel; one end of the first delivery channel is connected to the heated medium inlet, and the first delivery channel is used to deliver the heated medium to the heat exchange device; one end of the second delivery channel is connected to the heated medium outlet, and the second delivery channel is used to output the heated medium heated by the heat exchange device; There are multiple heat exchange devices and multiple medium delivery channels; the multiple heating medium output channels correspond to the multiple heat exchange devices respectively, and the other end of each heating medium output channel is connected to the heating medium inlet of the corresponding heat exchange device; the multiple medium delivery channels correspond to the multiple heat exchange devices respectively, one end of the first delivery channel of each medium delivery channel is connected to the heated medium inlet of the corresponding heat exchange device, and one end of the second delivery channel of each medium delivery channel is connected to the heated medium outlet of the corresponding heat exchange device; The system also includes multiple heating medium return channels and multiple first temperature-controlled valves, the multiple heating medium return channels correspond to the multiple first temperature-controlled valves respectively, and the multiple heating medium return channels correspond to the multiple heat exchange devices respectively; the heating medium return channel includes a first segment and a second segment, one end of the first segment of each heating medium return channel is connected to the heating medium outlet of the corresponding heat exchange device, the other end of the first segment of each heating medium return channel is connected to the first inlet of the corresponding first temperature-controlled valve, one end of the second segment of each heating medium return channel is connected to the outlet of the corresponding first temperature-controlled valve, and each heating medium output channel is also connected to the second inlet of the corresponding first temperature-controlled valve, and the first temperature-controlled valve is used to control the medium to flow from the first inlet or the second inlet to the second segment according to the temperature of the medium in the corresponding heating medium return channel.

2. The marine waste heat collection system according to claim 1, characterized in that: The heating medium output channel is a heated cooling medium output channel, one end of each heating medium output channel is connected to the output end of the heated cooling medium of the corresponding energy conversion device, and the energy conversion device is used to transport the heated cooling medium to the corresponding heating medium output channel; the heat exchange device is a first heat exchanger.

3. The marine waste heat collection system according to claim 2, characterized in that: The medium delivery channel is an intermediate medium delivery channel, and the other end of the first delivery channel is connected to the intermediate medium providing device. The system further includes: a plurality of exhaust pipes, each corresponding to each of the plurality of energy conversion devices, one end of each exhaust pipe being connected to an exhaust end of the corresponding energy conversion device; The other end of each of the second delivery channels and the other end of each of the exhaust pipelines are connected to the thermal equipment; the thermal equipment is used to integrate the waste heat of the medium provided by each of the exhaust pipelines and the intermediate medium delivery channel to generate a final heating medium.

4. The marine waste heat collection system according to claim 3, characterized in that: The thermal equipment includes: A heating device comprising a first heating medium inlet, a first heating medium outlet, a first heated medium inlet, and a first heated medium outlet, wherein the heating device is an exhaust gas boiler or a heater; the other end of the exhaust pipe is connected to the first heating medium inlet; a heated medium delivery channel, comprising a third delivery channel and a fourth delivery channel; one end of the third delivery channel is connected to the first heated medium inlet, and the third delivery channel is used to deliver a predetermined heated medium to the heating device; one end of the fourth delivery channel is connected to the first heated medium outlet, and the fourth delivery channel is used to output the predetermined heated medium heated by the heating device; The second heat exchanger includes a second heating medium inlet, a second heating medium outlet, a second heated medium inlet and a second heated medium outlet; the other end of the fourth delivery channel is connected to the second heating medium inlet, and the other end of the third delivery channel is connected to the second heating medium outlet; the other end of the second delivery channel is connected to the second heated medium inlet, and the second heated medium outlet is used to output the final heating medium.

5. The marine waste heat collection system according to claim 4, characterized in that: There are multiple heating devices and multiple heated medium delivery channels; the multiple exhaust pipes correspond to the multiple heating devices respectively, and the other end of each exhaust pipe is connected to the first heating medium inlet of the corresponding heating device; the multiple heated medium delivery channels correspond to the multiple heating devices respectively, and one end of the fourth delivery channel of each heated medium delivery channel is connected to the first heated medium outlet of the corresponding heating device.

6. The marine waste heat collection system according to claim 4, characterized in that: The system also includes a second temperature-controlled valve, the intermediate medium delivery channel also includes a fifth delivery channel, the fifth delivery channel includes a third segment and a fourth segment, one end of the third segment is connected to the second heated medium outlet, the other end of the third segment is connected to the first inlet of the second temperature-controlled valve, one end of the fourth segment is connected to the outlet of the second temperature-controlled valve, the second delivery channel is connected to the second inlet of the second temperature-controlled valve, and the second temperature-controlled valve is used to control the flow ratio of the medium flowing through the second temperature-controlled valve from the first inlet and the second inlet according to the temperature of the intermediate medium in the fifth delivery channel.

7. The marine waste heat collection system according to claim 6, characterized in that: The fifth conveying channel is connected to a waste heat power generation device so as to generate electricity by using the final heating medium through the waste heat power generation device.

8. A method for controlling the flow of a heating medium, characterized in that: The method is applied to the marine waste heat collection system according to claim 4, and the method comprises: When the temperature of the heating medium in the heating medium return channel does not reach a predetermined temperature threshold, connecting the second inlet of the first temperature control valve to its outlet, and controlling the first inlet of the first temperature control valve to be in a cut-off state to allow the heating medium to flow from the second inlet to the second segment of the heating medium return channel; When the temperature of the heating medium in the heating medium return channel reaches the predetermined temperature threshold, the first inlet of the first temperature control valve is connected to its outlet, and the second inlet of the first temperature control valve is controlled to be in a cut-off state with respect to its outlet, so that the heating medium flows from the first inlet to the second segment of the heating medium return channel.

9. A method for controlling the flow of an intermediate medium, characterized in that: The method is applied to the marine waste heat collection system according to claim 6, and the method comprises: obtaining the temperature of the intermediate medium in the fifth conveying channel; When the temperature of the intermediate medium does not reach the first temperature threshold, the first inlet and the outlet of the second temperature control valve are connected at the maximum opening, and the second inlet and the outlet of the second temperature control valve are controlled to be in a cut-off state; When the temperature of the intermediate medium reaches the first temperature threshold and does not reach the second temperature threshold, determining a first target opening and a second target opening according to the temperature of the intermediate medium, connecting the first inlet of the second temperature control valve to its outlet at the first target opening, and connecting the second inlet of the second temperature control valve to its outlet at the second target opening, wherein the first target opening is negatively correlated with the temperature of the intermediate medium, and the second target opening is positively correlated with the temperature of the intermediate medium; When the temperature of the intermediate medium reaches the second temperature threshold, the second inlet and the outlet of the second temperature control valve are connected at the maximum opening, and the first inlet and the outlet of the second temperature control valve are controlled to be in a cut-off state.

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