Nuclear steam supply system

Abstract

The present invention discloses a nuclear energy steam supply system, comprising a nuclear energy system, a steam supply system, and a seawater desalination system. The nuclear energy system is suitable for generating nuclear steam. The steam supply system comprises a steam extraction pipeline and a steam network. The steam extraction pipeline is connected to the nuclear energy system and is suitable for nuclear steam to pass through the steam extraction pipeline. The seawater desalination water in the steam network is suitable for heat exchange with the nuclear steam in the steam extraction pipeline to generate industrial steam. The seawater desalination system comprises a seawater desalination device, a heat source pipeline, and a supply pipeline. The seawater desalination device is arranged on the heat source pipeline and the supply pipeline. The seawater desalination device is suitable for generating seawater desalination water. One end of the heat source pipeline is connected to the steam extraction pipeline, and the other end of the heat source pipeline is connected to the nuclear energy system. The supply pipeline is connected to the steam network and is suitable for transporting seawater desalination water to the steam network. The nuclear energy steam supply system of the present invention can realize the supply of industrial steam based on nuclear energy, achieving clean and efficient industrial steam supply.

Description

Technical Field

[0001] The present invention relates to the field of nuclear energy technology, and in particular to an industrial steam supply system utilizing nuclear energy. Background Art

[0002] Steam is one of the most common and effective heat exchange media in the industrial sector and is widely used in modern industrial production activities. Currently, industrial steam is primarily supplied by coal-fired units. With the construction of coal-fired units being gradually and strictly controlled across the country, the industrial steam supply may become insufficient in the near future, and in severe cases, there may even be a difficult situation where "steam is completely unavailable." Nuclear energy, as a clean energy source, is safe, efficient, and clean. However, the technology for large-scale external supply of industrial steam from nuclear power plants is still immature, which restricts the widespread application of nuclear industrial steam. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a nuclear energy steam supply system, which can realize the supply of industrial steam based on nuclear energy, achieve clean and efficient industrial steam supply, and avoid the situation of insufficient supply of clean industrial steam.

[0005] The nuclear energy steam supply system of an embodiment of the present invention includes: a nuclear energy system, which is suitable for generating nuclear steam; a steam supply system, which includes a steam extraction pipeline and a steam network, the steam extraction pipeline is connected to the nuclear energy system, and the steam extraction pipeline is suitable for the passage of the nuclear steam, the steam network is suitable for the introduction of seawater, and the seawater in the steam network is suitable for heat exchange with the nuclear steam in the steam extraction pipeline to generate industrial steam; a seawater desalination system, which includes a seawater desalination device, a heat source pipeline and a supply pipeline, the seawater desalination device is arranged on the heat source pipeline and the supply pipeline, the seawater desalination device is suitable for generating seawater, one end of the heat source pipeline is connected to the steam extraction pipeline, and the other end of the heat source pipeline is connected to the nuclear energy system, the heat source pipeline is suitable for providing heat energy to the seawater desalination device, the supply pipeline is connected to the steam network, and the supply pipeline is suitable for transporting the seawater to the steam network.

[0006] The nuclear energy steam supply system of the embodiment of the present invention can realize the supply of industrial steam based on nuclear energy, achieve clean and efficient industrial steam supply, and avoid the situation of insufficient supply of clean industrial steam.

[0007] In some embodiments, the nuclear energy system includes a steam main pipe and a condenser, one end of the steam extraction pipeline is connected to the steam main pipe, and the other end of the steam extraction pipeline is connected to the condenser.

[0008] In some embodiments, the steam extraction pipeline includes a plurality of steam extraction branch pipes, the plurality of steam extraction branch pipes are divided into a first pipe group and a second pipe group, the nuclear energy system includes a high-pressure cylinder, the first pipe group and the second pipe group are both connected to the steam main pipe, and the first pipe group and the second pipe group are symmetrically arranged about the high-pressure cylinder;

[0009] And / or, the nuclear energy system includes a first MSR and a second MSR, the first MSR is arranged on one side of the high-pressure cylinder and connected to the steam main pipe, the second MSR is arranged on the other side of the high-pressure cylinder and connected to the steam main pipe, and the first MSR and the second MSR are arranged symmetrically with respect to the high-pressure cylinder.

[0010] In some embodiments, each of the steam extraction branch pipes is provided with an isolation valve, a check valve and a steam extraction control valve. The isolation valve, the check valve and the steam extraction control valve are arranged in sequence along the steam extraction branch pipe from upstream to downstream, and the steam extraction control valve is electrically connected to the control device of the nuclear power system.

[0011] In some embodiments, the steam network includes a circulation pipeline, a superheater, a steam generator, a booster pump and a deaerator. The deaerator, the booster pump, the steam generator and the superheater are arranged in the circulation pipeline and arranged in sequence from upstream to downstream along the circulation pipeline. The superheater and the steam generator are arranged in the steam extraction pipeline. The seawater in the steam network is heat exchanged with the nuclear steam in the steam extraction pipeline through the steam generator and the superheater, and the supply pipeline is connected to the deaerator.

[0012] In some embodiments, the steam network includes a steam branch pipe connected between the circulation pipeline and the deaerator, and the steam branch pipe is suitable for transporting the industrial steam generated in the circulation pipeline to the deaerator.

[0013] In some embodiments, the seawater desalination system includes a heat pump, one end of the heat source pipeline is connected to the steam extraction pipeline between the superheater and the steam generator, and the other end of the heat source pipeline is connected to the condenser. The heat pump is arranged in the heat source pipeline, and the seawater or fresh seawater in the supply pipeline can exchange heat with the nuclear steam at the heat pump.

[0014] In some embodiments, the seawater desalination system includes a discharge pipeline, which is connected to the seawater desalination device and is suitable for discharging brine generated by the seawater desalination device, and the heat pump is arranged in the discharge pipeline.

[0015] In some embodiments, the heat source pipeline includes a first parallel pipe section and a second parallel pipe section, the first parallel pipe section and the second parallel pipe section are arranged in parallel, the seawater desalination device is arranged in the first parallel pipe section, and the seawater desalination device can exchange heat with the nuclear steam in the first parallel pipe section, and the heat pump is arranged in the second parallel pipe section.

[0016] In some embodiments, the supply pipeline includes an upstream pipe section and a downstream pipe section, and the seawater desalination device is connected between the upstream pipe section and the downstream pipe section;

[0017] A first heat exchanger is provided between the upstream pipe section and the downstream pipe section, and / or a second heat exchanger is provided between the upstream pipe section and the second parallel pipe section, and / or a third heat exchanger is provided between the downstream pipe section and the heat source pipe section.

[0018] In some embodiments, the supply pipeline includes an upstream pipe section and a downstream pipe section, and the seawater desalination device is connected between the upstream pipe section and the downstream pipe section;

[0019] The seawater desalination system includes a ring pipeline and a fourth heat exchanger. The ring pipeline can exchange heat with the nuclear steam in the second parallel pipe section in the heat pump, and the ring pipeline can exchange heat with the downstream pipe section in the fourth heat exchanger.

[0020] In some embodiments, a preheater is included, which is connected between the supply pipeline and the steam extraction pipeline. The preheater can preheat the fresh seawater flowing into the steam pipeline network. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the nuclear energy steam supply system according to an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 Schematic diagram of the Chinese nuclear energy system.

[0023] Figure 3 It is a schematic diagram of the overall structure of a nuclear energy steam supply system according to an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the overall structure of a nuclear energy steam supply system according to another embodiment of the present invention.

[0025] Reference numerals:

[0026] Nuclear Energy System 100;

[0027] Steam main 11; first MSR 12; second MSR 13; high-pressure cylinder 14; decondenser 15; nuclear generator 16; condenser 17; reactor 18; generator 19;

[0028] Steam supply system 200;

[0029] Steam extraction pipeline 21; first pipe group 211; second pipe group 212; isolation valve 213; check valve 214; steam extraction control valve 215; steam pipe network 22; circulation pipeline 221; deaerator 222; booster pump 223; steam generator 224; superheater 225; steam branch pipe 226;

[0030] Seawater desalination system 300;

[0031] Desalination device 31; heat source pipeline 32; first parallel pipe section 321; second parallel pipe section 322; supply pipeline 33; upstream pipe section 331; downstream pipe section 332; heat pump 34; discharge pipeline 35; first heat exchanger 36; second heat exchanger 37; third heat exchanger 38; ring pipeline 39; fourth heat exchanger 310;

[0032] Preheater 400. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 4 As shown, the nuclear energy steam supply system according to the embodiment of the present invention includes a nuclear energy system 100 , a steam supply system 200 and a seawater desalination system 300 .

[0035] The nuclear energy system 100 is suitable for generating nuclear steam, such as Figure 1 As shown, the nuclear energy system 100 may be an AP series nuclear power unit, and the nuclear energy system 100 may convert nuclear energy into thermal energy and internal energy of steam.

[0036] The steam supply system 200 includes a steam extraction pipeline 21 and a steam pipeline network 22. The steam extraction pipeline 21 is connected to the nuclear energy system 100, and the steam extraction pipeline 21 is suitable for nuclear steam to pass through. The steam pipeline network 22 is suitable for seawater to enter, and the seawater in the steam pipeline network 22 is suitable for heat exchange with the nuclear steam in the steam extraction pipeline 21 to generate industrial steam.

[0037] like Figure 1As shown, the nuclear energy system 100 may include a nuclear energy pipeline for transporting steam. The steam generated by the nuclear energy system 100 may be transported via the nuclear energy pipeline. The steam extraction pipeline 21 may be connected to the nuclear energy pipeline, and the nuclear steam in the nuclear energy pipeline may be transported into the steam extraction pipeline 21. The steam pipeline network 22 may be arranged in parallel with a portion of the steam extraction pipeline 21. A heat exchanger may be installed between the steam pipeline network 22 and the steam extraction pipeline 21. In the heat exchanger, the freshwater in the steam pipeline network 22 may be heated by heat exchange to produce industrial steam. The generated industrial steam can be directly used in industrial production.

[0038] It should be noted that the steam extraction pipeline 21 can be a closed-loop pipeline, that is, the nuclear steam extracted by the steam extraction pipeline 21 can be discharged back into the nuclear energy system 100 after heat exchange with the steam pipeline network 22, avoiding nuclear pollution.

[0039] like Figure 1 As shown, the seawater desalination system 300 includes a seawater desalination device 31, a heat source pipeline 32, and a supply pipeline 33. The seawater desalination device 31 is disposed between the heat source pipeline 32 and the supply pipeline 33. The seawater desalination device 31 is adapted to produce fresh seawater water. One end of the heat source pipeline 32 is connected to the steam extraction pipeline 21, and the other end of the heat source pipeline 32 is connected to the nuclear energy system 100. The heat source pipeline 32 is adapted to provide heat energy to the seawater desalination device 31, thereby providing heat energy to the seawater desalination device 31. The supply pipeline 33 is connected to the steam network 22 and is adapted to transport fresh seawater water to the steam network 22. That is, the fresh seawater water produced by the seawater desalination device 31 can be transported to the steam network 22 via the supply pipeline 33.

[0040] When in use, the nuclear energy steam supply system of the present invention can utilize the nuclear energy system 100 to generate nuclear steam, and the nuclear steam can exchange heat with the steam pipeline, so that the seawater in the steam pipeline can be heated into industrial steam. The seawater desalination system 300 can utilize the thermal energy of the nuclear steam generated by the nuclear energy system 100 to desalinate seawater, and the seawater generated by the treatment can be used to replenish the steam pipeline network 22.

[0041] The nuclear steam supply system of the embodiment of the present invention can realize the supply of industrial steam based on nuclear energy, achieving clean and efficient industrial steam supply and avoiding the shortage of clean industrial steam. In addition, the nuclear steam supply system of the embodiment of the present invention can simultaneously provide heat energy for steam supply system 200 and seawater desalination system 300, realizing the efficient and comprehensive utilization of nuclear energy, and also realizing the integration of seawater desalination and industrial steam, improving overall energy efficiency, and meeting the requirements of clean and green energy supply. It provides an effective way to solve the environmental pollution problems caused by traditional coal-fired energy, improve the energy supply structure, and ensure the supply of clean energy required for industrial development.

[0042] In some embodiments, as Figure 2 and Figure 3 As shown, nuclear energy system 100 includes a steam main 11 and a condenser 17. One end of a steam extraction line 21 is connected to the steam main 11, and the other end of the steam extraction line 21 is connected to the condenser 17. The steam main 11 can be connected to the nuclear generator 16 of the nuclear energy system 100, and the nuclear steam generated by the nuclear generator 16 can be transported to the steam main 11. The nuclear steam then flows through the steam extraction line 21 and back to the condenser 17 of the nuclear energy system 100, thereby achieving a closed-loop transmission of nuclear steam and preventing leakage and contamination.

[0043] In some embodiments, the steam extraction pipeline 21 includes multiple steam extraction branches, which are divided into a first pipe group 211 and a second pipe group 212. The nuclear energy system 100 includes a high-pressure cylinder 14. The first pipe group 211 and the second pipe group 212 are both connected to the steam main pipe 11. The first pipe group 211 and the second pipe group 212 are symmetrically arranged about the high-pressure cylinder 14.

[0044] like Figure 2 As shown, the high-pressure cylinder 14 is connected to the steam main pipe 11, and the first pipe group 211 and the second pipe group 212 each can include only one steam extraction branch pipe. The two steam extraction branches are arranged at intervals along the extension direction of the steam main pipe 11, with the high-pressure cylinder 14 located between the first pipe group 211 and the second pipe group 212. This not only meets the operational requirements of high-load steam extraction but also provides more flexible steam extraction operations. Furthermore, the symmetrical arrangement of the first and second pipe groups 211, 212 balances steam flow and pressure, ensuring operational stability.

[0045] In addition, the design of the two extraction branches can provide industrial steam on a large scale and over long distances, meeting the investment and operability issues of the pipeline network, while having little impact on the safety and economy of the turbine.

[0046] It is understandable that in some other embodiments, the first tube group 211 and the second tube group 212 may each include more than two steam extraction branch pipes.

[0047] In some embodiments, as Figure 2 As shown, nuclear energy system 100 includes a first MSR 12 and a second MSR 13. The first MSR 12 is located on one side of a high-pressure cylinder 14 and communicates with a steam header 11. The second MSR 13 is located on the other side of the high-pressure cylinder 14 and communicates with the steam header 11. The first and second MSRs 12 and 13 are symmetrically arranged about the high-pressure cylinder 14. A first tube group 211 can be located between the first MSR 12 and the high-pressure cylinder 14, and a second tube group 212 can be located between the second MSR 13 and the high-pressure cylinder 14. Thus, the symmetrical arrangement of the interfaces of multiple components on the steam header 11 further balances steam flow and pressure, ensuring operational stability.

[0048] In some embodiments, as Figure 2 As shown, one end of the steam main pipe 11 may be connected to a steam bypass system, which may include multiple decondensers 15. A bypass valve may be installed at the inlet of each decondenser 15. During normal operation of the nuclear energy system 100, the steam bypass system is not activated. In the event of a malfunction, the nuclear steam within the steam main pipe 11 can be transferred to the multiple decondensers 15 within the steam bypass system, thereby preventing leakage and contamination.

[0049] In some embodiments, as Figure 3 As shown, the nuclear energy system 100 may further include a reactor 18, a nuclear reactor, a generator 19, a low-pressure cylinder, a steam-water separator reheater, etc. The steam-water separator reheater may be connected between the high-pressure cylinder 14 and the low-pressure cylinder. The generator 19 may be connected to the low-pressure cylinder.

[0050] In some embodiments, each steam extraction branch pipe is provided with an isolation valve 213, a check valve 214 and a steam extraction control valve 215. The isolation valve 213, the check valve 214 and the steam extraction control valve 215 are arranged in sequence along the steam extraction branch pipe from upstream to downstream, and the steam extraction control valve 215 is electrically connected to the control device of the nuclear power system.

[0051] like Figure 2 As shown, isolation valve 213 can be manual, allowing manual isolation of the extraction branch pipe. Check valve 214 prevents backflow of nuclear steam into the extraction branch pipe. The control device can be a PMS control device. Thus, when in use, extraction control valve 215 not only regulates the extraction steam flow rate but also serves as a backup isolation function for the MSIV.

[0052] In some embodiments, as Figure 3 As shown, the steam network 22 includes a circulation pipeline 221, a superheater 225, a steam generator 224, a booster pump 223 and a deaerator 222. The deaerator 222, the booster pump 223, the steam generator 224 and the superheater 225 are arranged in the circulation pipeline 221 and arranged in sequence from upstream to downstream along the circulation pipeline 221. The superheater 225 and the steam generator 224 are arranged in the steam extraction pipeline 21. The seawater in the steam network 22 is heat exchanged with the nuclear steam in the steam extraction pipeline 21 through the steam generator 224 and the superheater 225. The supply pipeline 33 is connected to the deaerator 222.

[0053] During use, the desalinated water can first be transported to the deaerator 222, which can deoxygenate the desalinated water. The desalinated water discharged from the deaerator 222 can then be pressurized to the required pressure by the booster pump 223. The steam generator 224 can exchange heat with the core steam in the steam extraction pipeline 21 to convert the desalinated water into saturated steam. The superheater 225 can then further exchange heat with the core steam in the steam extraction pipeline 21 to heat the saturated steam into superheated steam that meets the temperature requirements. The superheated steam can then be transported to the liquid steam transmission network to supply industrial steam.

[0054] like Figure 3 As shown, the supply pipeline 33 is connected to the deaerator 222, and the supply pipeline 33 can flow fresh sea water into the deaerator 222, thereby realizing the supply of fresh sea water in the steam network 22 and ensuring the deoxygenation effect.

[0055] It should be noted that the multiple steam extraction branch pipes can be converged together before flowing to the superheater 225, thereby facilitating the arrangement of the pipes in the superheater 225.

[0056] In some embodiments, as Figure 3 As shown, the steam network 22 includes a steam branch pipe 226 connected between the circulation pipeline 221 and the deaerator 222. The steam branch pipe 226 is suitable for conveying the industrial steam generated in the circulation pipeline 221 to the deaerator 222. The industrial steam generated in the steam network 22 can provide heat energy for the deaerator 222, thereby simplifying the structure and improving the overall energy efficiency.

[0057] In some embodiments, as Figure 3 and Figure 4 As shown, the seawater desalination system 300 includes a heat pump 34, one end of the heat source pipeline 32 is connected to the steam extraction pipeline 21 between the superheater 225 and the steam generator 224, and the other end of the heat source pipeline 32 is connected to the condenser 17. The heat pump 34 is arranged in the heat source pipeline 32, and the seawater or fresh seawater in the supply pipeline 33 can exchange heat with the nuclear steam at the heat pump 34.

[0058] The supply pipeline 33 can be divided into a front section pipeline and a rear section pipeline, wherein the seawater desalination device 31 is connected between the front section pipeline and the rear section pipeline. Figure 3 As shown, the heat pump 34 can be connected between the front section pipeline and the heat source pipeline 32. In some other embodiments, the heat pump 34 can also be connected between the rear section pipeline and the heat source pipeline 32. In this way, the thermal efficiency and overall performance can be further improved.

[0059] In some embodiments, as Figure 3 and Figure 4As shown, the desalination system 300 includes a discharge pipeline 35, which is connected to the desalination device 31 and is suitable for discharging the brine produced by the desalination device 31. The heat pump 34 is located in the discharge pipeline 35. The brine in the desalination device 31 has a high thermal energy. By introducing the discharge pipeline 35 into the heat pump 34, the heat energy can be recovered and utilized, further improving the thermal efficiency and overall performance.

[0060] In some embodiments, as Figure 3 and Figure 4 As shown, the heat source pipeline 32 includes a first parallel pipe section 321 and a second parallel pipe section 322. The first parallel pipe section 321 and the second parallel pipe section 322 can be located in the middle of the heat source pipeline 32, and the first parallel pipe section 321 and the second parallel pipe section 322 are arranged in parallel. The seawater desalination device 31 is located in the first parallel pipe section 321 and can exchange heat with the nuclear steam in the first parallel pipe section 321. The heat pump 34 is located in the second parallel pipe section 322. As a result, the seawater desalination device 31 and the heat pump 34 can each independently supply heat energy to the nuclear steam, avoiding insufficient heat energy supply and avoiding mutual interference.

[0061] In some embodiments, as Figure 3 As shown, the supply pipeline 33 includes an upstream pipe section 331 and a downstream pipe section 332, with the seawater desalination device 31 connected between the upstream pipe section 331 and the downstream pipe section 332. A first heat exchanger 36 is provided between the upstream pipe section 331 and the downstream pipe section 332, a second heat exchanger 37 is provided between the upstream pipe section 331 and the second parallel pipe section 322, and a third heat exchanger 38 is provided between the downstream pipe section 332 and the heat source pipe section. This further enables the recovery and utilization of thermal energy, further improving thermal efficiency and overall performance.

[0062] It is understandable that in some other embodiments, one or more of the first heat exchanger 36 , the second heat exchanger 37 , and the third heat exchanger 38 may also be provided.

[0063] In some embodiments, as Figure 4 As shown, the supply pipeline 33 includes an upstream pipe section 331 and a downstream pipe section 332, with the seawater desalination device 31 connected between the upstream pipe section 331 and the downstream pipe section 332. The seawater desalination system 300 includes a ring pipeline 39 and a fourth heat exchanger 310. The ring pipeline 39 can exchange heat with the nuclear steam in the second parallel pipe section 322 within the heat pump 34, and can also exchange heat with the downstream pipe section 332 within the fourth heat exchanger 310. This allows for indirect preheating of the freshwater in the supply pipeline 33, preventing premature vaporization of the freshwater due to excessively high nuclear steam temperatures. This helps ensure stable freshwater transportation and facilitates the operation of subsequent components such as the deaerator 222.

[0064] In some embodiments, as Figure 3 and Figure 4 As shown, the nuclear steam supply system includes a preheater 400, which is connected between the supply line 33 and the steam extraction line 21. The preheater 400 preheats the fresh seawater flowing into the steam network 22. This improves thermal efficiency and overall performance while also reducing adverse effects on the deaerator 222, facilitating its efficient operation.

[0065] In some embodiments, the supply line 33 may be provided with a plurality of delivery pumps, for example, Figure 3 and Figure 4 As shown, a delivery pump can be provided in the upstream pipe section 331 and the downstream pipe section 332 respectively, thereby meeting the delivery requirements of the liquid in the seawater desalination device 31 and also playing a backup role to ensure the stability of operation.

[0066] In some embodiments, as Figure 3 As shown, the seawater desalination device 31 can be a distillation-type seawater desalination industrial steam production device, such as Figure 4 As shown, the seawater desalination device 31 may also be a multi-stage flash evaporation seawater desalination industrial steam production device.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0070] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0072] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A nuclear energy steam supply system, characterized in that: include: A nuclear energy system, wherein the nuclear energy system is suitable for generating nuclear steam, and the nuclear energy system comprises a steam main and a condenser; a steam supply system, wherein the steam supply system comprises a steam extraction pipeline and a steam pipeline network, one end of the steam extraction pipeline is connected to the steam main pipe, the other end of the steam extraction pipeline is connected to the condenser, the steam extraction pipeline is connected to the nuclear energy system, and the steam extraction pipeline is suitable for the passage of the nuclear steam, the steam pipeline network is suitable for the introduction of seawater, the seawater in the steam pipeline network is suitable for heat exchange with the nuclear steam in the steam extraction pipeline to generate industrial steam, the steam pipeline network comprises a circulation pipeline, a superheater, a steam generator, a booster pump and a deaerator, the deaerator, the booster pump, the steam generator and the superheater are arranged in the circulation pipeline and are arranged in sequence from upstream to downstream along the circulation pipeline, the superheater and the steam generator are arranged in the steam extraction pipeline, and the seawater in the steam pipeline network is heat-exchanged with the nuclear steam in the steam extraction pipeline through the steam generator and the superheater; A seawater desalination system, comprising a seawater desalination device, a heat source pipeline, and a supply pipeline. The seawater desalination device is disposed on the heat source pipeline and the supply pipeline, and is suitable for producing fresh seawater water. One end of the heat source pipeline is in communication with the steam extraction pipeline, and the other end of the heat source pipeline is in communication with the nuclear energy system. The heat source pipeline is suitable for providing heat energy to the seawater desalination device. The supply pipeline is in communication with the steam network, and is suitable for transporting fresh seawater water to the steam network. The supply pipeline is in communication with the deaerator. A heat pump, one end of the heat source pipeline is connected to the steam extraction pipeline between the superheater and the steam generator, and the other end of the heat source pipeline is connected to the condenser. The heat pump is arranged in the heat source pipeline, and the seawater or fresh seawater in the supply pipeline can exchange heat with the nuclear steam at the heat pump.

2. The nuclear energy steam supply system according to claim 1, characterized in that: The steam extraction pipeline includes a plurality of steam extraction branch pipes, the plurality of steam extraction branch pipes are divided into a first pipe group and a second pipe group, the nuclear energy system includes a high-pressure cylinder, the first pipe group and the second pipe group are both connected to the steam main pipe, and the first pipe group and the second pipe group are symmetrically arranged about the high-pressure cylinder; And / or, the nuclear energy system includes a first MSR and a second MSR, the first MSR is arranged on one side of the high-pressure cylinder and connected to the steam main pipe, the second MSR is arranged on the other side of the high-pressure cylinder and connected to the steam main pipe, and the first MSR and the second MSR are arranged symmetrically with respect to the high-pressure cylinder.

3. The nuclear energy steam supply system according to claim 2, characterized in that: Each of the steam extraction branch pipes is provided with an isolation valve, a check valve and a steam extraction control valve. The isolation valve, the check valve and the steam extraction control valve are arranged in sequence along the steam extraction branch pipe from upstream to downstream, and the steam extraction control valve is electrically connected to the control device of the nuclear energy system.

4. The nuclear energy steam supply system according to claim 1, characterized in that: The steam pipe network includes a steam branch pipe connected between the circulation pipeline and the deaerator, and the steam branch pipe is suitable for transporting the industrial steam generated in the circulation pipeline to the deaerator.

5. The nuclear energy steam supply system according to claim 1, characterized in that: The seawater desalination system includes a discharge pipeline, which is communicated with the seawater desalination device and is suitable for discharging brine generated by the seawater desalination device. The heat pump is arranged on the discharge pipeline.

6. The nuclear energy steam supply system according to claim 1, characterized in that: The heat source pipeline includes a first parallel pipe section and a second parallel pipe section, the first parallel pipe section and the second parallel pipe section are arranged in parallel, the seawater desalination device is arranged in the first parallel pipe section, and the seawater desalination device can exchange heat with the nuclear steam in the first parallel pipe section, and the heat pump is arranged in the second parallel pipe section.

7. The nuclear energy steam supply system according to claim 6, characterized in that: The supply pipeline includes an upstream pipe section and a downstream pipe section, and the seawater desalination device is connected between the upstream pipe section and the downstream pipe section; A first heat exchanger is provided between the upstream pipe section and the downstream pipe section, and / or a second heat exchanger is provided between the upstream pipe section and the second parallel pipe section, and / or a third heat exchanger is provided between the downstream pipe section and the heat source pipeline.

8. The nuclear energy steam supply system according to claim 6, characterized in that: The supply pipeline includes an upstream pipe section and a downstream pipe section, and the seawater desalination device is connected between the upstream pipe section and the downstream pipe section; The seawater desalination system includes a ring pipeline and a fourth heat exchanger. The ring pipeline can exchange heat with the nuclear steam in the second parallel pipe section in the heat pump, and the ring pipeline can exchange heat with the downstream pipe section in the fourth heat exchanger.

9. The nuclear energy steam supply system according to any one of claims 1 to 8, characterized in that: It includes a preheater connected between the supply pipeline and the steam extraction pipeline, and the preheater can preheat the fresh sea water flowing into the steam pipeline network.

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