Heat supply system utilizing steam exhaust waste heat of nuclear power unit

Abstract

The utility model belongs to the technical field of nuclear power unit heat supply, and discloses a heat supply system utilizing steam exhaust waste heat of a nuclear power unit, which comprises a heat supply assembly, a steam turbine assembly, a heat exchange assembly and a heat supply network heater, the input end of the steam turbine assembly is connected with the heat supply assembly, and the heat supply network heat exchanger is arranged inside a condenser. The input end of the condenser is connected to dead steam waste heat output by the output end of the steam turbine assembly, the output end of the condenser is connected to the heat supply assembly, and the input end of the heat supply network heat exchanger is connected to heat supply network circulating water return. The input end of the heat supply network heater is connected to the output end of the heat supply network heat exchanger and exhaust steam waste heat output by the output end of the turbine assembly, the output end of the heat supply network heater is used for providing heat supply network circulating water supply, heat supply network circulating water return water is heated by dead steam waste heat and high-temperature steam in a cascade mode, efficient utilization of energy is facilitated, and the energy utilization rate is increased. The heat supply cost is greatly reduced, and the economical efficiency of nuclear energy heat supply is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating of nuclear power units, in particular to a heating system utilizing waste steam heat of nuclear power units. Background Art

[0002] Nuclear power units mainly use steam extraction from steam turbines for heating. Nuclear power units themselves have the characteristics of large steam volume and relatively low quality. Existing nuclear power heating technology usually uses high-quality steam as a heating heat source, and cannot use low-quality steam, which will not only cause large power generation losses, but also cause large irreversible losses in the heat exchange process between high-quality steam and circulating water in the heat network, resulting in high heating costs and low energy utilization. If the waste heat of the nuclear power unit is extracted to heat the circulating water in the heat network, an independent heat network heat exchanger is required, which not only increases the investment and layout space of pipelines, valves and equipment, but also takes up space and increases equipment costs.

[0003] Therefore, there is an urgent need to use a heating system that utilizes the waste heat from the nuclear power units to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a heating system utilizing the waste heat of exhaust steam from nuclear power units. The heat network heat exchanger does not occupy additional space and is simple and reliable. The return water of the heat network circulating water is heated by the waste heat of exhaust steam and high-temperature steam in stages, which is conducive to the efficient use of energy and reduces the heating cost.

[0005] In order to solve the above problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] The heating system using waste heat from nuclear power units includes:

[0007] A heating component, wherein the heating component is used to provide saturated steam;

[0008] A steam turbine assembly, the input end of which is connected to the heat supply assembly, and the steam turbine assembly is used to generate electricity and provide exhaust steam waste heat and steam;

[0009] A heat exchange component, the heat exchange component includes a condenser and a heat network heat exchanger, the heat network heat exchanger is arranged inside the condenser, the input end of the condenser is connected to the exhaust steam outputted from the output end of the steam turbine component, the output end of the condenser is connected to the heat supply component, the input end of the heat network heat exchanger is connected to the heat network circulating water return water, and the heat network heat exchanger is used to exchange heat between the exhaust steam and the heat network circulating water return water;

[0010] A heating network heater, wherein the input end of the heating network heater is connected to the output end of the heating network heat exchanger and the exhaust steam outputted from the output end of the steam turbine assembly, and the output end of the heating network heater is used to provide circulating water supply for the heating network.

[0011] Preferably, the heat network heat exchanger includes a water inlet mechanism, a water outlet mechanism and a heat exchange tube bundle, the heat exchange tube bundle is located between the water inlet mechanism and the water outlet mechanism, the input end of the water inlet mechanism is connected to the heat network circulating water return, the output end of the water inlet mechanism is connected to the input end of the heat exchange tube bundle, the input end of the water outlet mechanism is connected to the output end of the heat exchange tube bundle, the output end of the water outlet mechanism is connected to the heat network heater, and the heat exchange tube bundle is used to absorb the waste heat of exhaust steam from the heat network circulating water return.

[0012] Preferably, the water inlet mechanism includes a water inlet chamber, a water inlet head and a water inlet tube sheet. The outer peripheral surface of the water inlet chamber is provided with a water inlet interface, and the water inlet interface is connected to the circulating water return of the heat network. The water inlet head and the water inlet tube sheet are respectively arranged at the two end openings of the water inlet chamber, and one end of the heat exchange tube bundle is penetrated through the water inlet tube sheet and connected to the water inlet chamber.

[0013] Preferably, the water outlet mechanism comprises a water outlet chamber, a water outlet head and a water outlet tube plate, the outer peripheral surface of the water outlet chamber is provided with a water outlet interface, the water outlet interface is connected to the heat network heater, the water outlet head and the water outlet tube plate are respectively arranged at the two end openings of the water outlet chamber, and the other end of the heat exchange tube bundle is penetrated through the water outlet tube plate and connected to the water outlet chamber.

[0014] Preferably, the heating network heater is provided with a reflux port, the reflux port is connected to the condenser, and the drain water in the heating network heater enters the condenser through the reflux port.

[0015] Preferably, the heat exchange component also includes a seawater heat exchanger and a circulating cooling water pump, the input end of the circulating cooling water pump is connected to seawater, the output end of the circulating cooling water pump is connected to the input end of the seawater heat exchanger, the output end of the seawater heat exchanger is connected to seawater, the seawater heat exchanger is arranged inside the condenser, and the seawater heat exchanger is used for heat exchange between exhaust steam and seawater.

[0016] Preferably, the steam turbine assembly comprises a steam turbine high-pressure cylinder and a steam turbine low-pressure cylinder, the input end of the steam turbine high-pressure cylinder is connected to the heat supply assembly, the output end of the steam turbine high-pressure cylinder is connected to the input end of the steam turbine low-pressure cylinder, and the output end of the steam turbine low-pressure cylinder is connected to the input end of the condenser and is used to provide exhaust steam waste heat.

[0017] Preferably, the steam turbine assembly further comprises a steam-water separator reheater, the input end of the steam-water separator reheater is connected to the output end of the high-pressure cylinder of the steam turbine, and the output end of the steam-water separator reheater is connected to the input end of the low-pressure cylinder of the steam turbine.

[0018] Preferably, the heating component includes a heating mechanism and a steam generator, the heating mechanism is connected to the input end of the steam generator, the output end of the steam generator is connected to the high-pressure cylinder of the steam turbine, and the steam generator is used to provide high-temperature and high-pressure saturated steam to the high-pressure cylinder of the steam turbine.

[0019] Preferably, the heating mechanism includes a reactor and a main pump, the output end of the reactor is connected to the input end of the steam generator, the input end of the reactor is connected to the output end of the main pump, and the input end of the main pump is connected to the output end of the steam generator.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a heating system using waste heat from the exhaust steam of a nuclear power unit. The input end of the steam turbine assembly is connected to the heating assembly. The heat exchange assembly includes a condenser and a heat network heat exchanger. The heat network heat exchanger is arranged inside the condenser, does not occupy additional plant space, is simple and reliable, and directly utilizes the exhaust steam for heating, does not require a steam extraction pipeline and valves, realizes the recovery of waste heat from the exhaust steam, and does not consume additional energy. The input end of the condenser is connected to the exhaust steam output from the output end of the steam turbine assembly, the output end of the condenser is connected to the heating assembly, the input end of the heat network heat exchanger is connected to the return water of the heat network circulating water, and the input end of the heat network heater is connected to the output end of the heat network heat exchanger and the exhaust steam output from the output end of the steam turbine assembly. The exhaust steam from the steam turbine component after work is exchanged with the return water of the hot network circulating water in the hot network heat exchanger, and then the exhaust steam is converted into condensed water in the condenser and sent to the heating component to be heated again, and the hot water circulating water return water is heated and enters the hot network heater to be heated again. After reaching the heating temperature, it is sent to the user for external heating. The return water of the hot network circulating water is heated in stages by the exhaust steam and high-temperature steam, which is conducive to the efficient use of energy, improves energy utilization, significantly reduces heating costs, and improves the economy of nuclear energy heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a heating system utilizing waste heat from exhaust steam of a nuclear power plant provided in an embodiment of the utility model;

[0023] Figure 2 A cross-sectional view of a heat network heat exchanger provided in an embodiment of the utility model;

[0024] Figure 3 A schematic structural diagram of a heat exchange assembly and a heat network heater provided in an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Heating components; 11. Steam generator; 12. Reactor; 13. Main pump;

[0027] 2. Steam turbine assembly; 21. Steam turbine high pressure cylinder; 22. Steam turbine low pressure cylinder; 23. Steam-water separation reheater;

[0028] 3. Heat exchange components; 31. Condenser; 32. Heat network heat exchanger; 321. Heat exchange tube bundle; 322. Water inlet chamber; 323. Water inlet head; 324. Water inlet tube sheet; 325. Water inlet interface; 326. Water outlet chamber; 327. Water outlet head; 328. Water outlet tube sheet; 329. Water outlet interface; 33. Seawater heat exchanger; 34. Circulating cooling water pump;

[0029] 4. Heating network heater;

[0030] 5. Generator. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be a connection between two elements or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] like Figure 1-Figure 3 As shown, in this embodiment, the heating system using the exhaust steam and waste heat of the nuclear power unit includes a heating component 1, a turbine component 2, a heat exchange component 3 and a heat network heater 4. Among them, the heating component 1 is used to provide saturated steam, the input end of the turbine component 2 is connected to the heating component 1, and the turbine component 2 is used to generate electricity and provide exhaust steam and waste heat and high-quality steam. The heat exchange component 3 includes a condenser 31 and a heat network heat exchanger 32. The heat network heat exchanger 32 is arranged inside the condenser 31. The input end of the condenser 31 is connected to the exhaust steam output from the output end of the turbine component 2. The output end of the condenser 31 is connected to the heating component 1. The input end of the heat network heat exchanger 32 is connected to the heat network circulating water return water. The heat network heat exchanger 32 is used to exchange heat between the exhaust steam and the heat network circulating water return water. The input end of the heat network heater 4 is connected to the output end of the heat network heat exchanger 32 and the exhaust steam output from the output end of the turbine component 2. The output end of the heat network heater 4 is used to provide heat network circulating water supply. Specifically, the heat network heat exchanger 32 is built into the condenser 31, does not occupy additional plant space, is simple and reliable, and directly uses exhaust steam for heating, does not require extraction pipelines and valves, realizes exhaust steam waste heat recovery, and does not consume additional energy. The heating component 1 generates heat through its own nuclear fuel in the fission process and can provide high-temperature and high-pressure saturated steam to the turbine component 2. The saturated steam enters the turbine component 2 to expand and do work for power generation. The exhaust steam after work is discharged into the condenser 31, and the exhaust steam of the high-pressure cylinder of the turbine enters the heat network heater 4. Among them, the exhaust steam of the turbine component 2 after doing work is exchanged with the heat network circulating water return water in the heat network heat exchanger 32 built into the condenser 31, that is, the exhaust steam is used to heat the heat network circulating water return water, and then the exhaust steam is condensed into water in the condenser 31 and sent to the heating component 1 for reheating, and the hot water circulating water return water is heated and enters the heat network heater 4 to be heated again, and after reaching the heating temperature, it is sent to the user for external heating. The heat network circulating water return water is heated by exhaust steam and high-temperature steam in stages, which is conducive to the efficient use of energy, improves energy utilization, significantly reduces heating costs, and improves the economy of nuclear energy heating.

[0036] Further, continue to refer to Figure 1-Figure 3The heat network heat exchanger 32 includes a water inlet mechanism, a water outlet mechanism and a heat exchange tube bundle 321. The heat exchange tube bundle 321 is located between the water inlet mechanism and the water outlet mechanism. The input end of the water inlet mechanism is connected to the heat network circulating water return, the output end of the water inlet mechanism is connected to the input end of the heat exchange tube bundle 321, the input end of the water outlet mechanism is connected to the output end of the heat exchange tube bundle 321, and the output end of the water outlet mechanism is connected to the heat network heater 4. The heat exchange tube bundle 321 is used to absorb the waste heat of exhaust steam from the heat network circulating water return. Specifically, the water inlet mechanism includes a water inlet chamber 322, a water inlet seal 323 and a water inlet tube sheet 324. The outer circumference of the water inlet chamber 322 is provided with a water inlet interface 325, which is connected to the circulating water return of the heat network. The water inlet seal 323 and the water inlet tube sheet 324 are respectively arranged at the two end openings of the water inlet chamber 322. One end of the heat exchange tube bundle 321 is penetrated through the water inlet tube sheet 324 and connected to the water inlet chamber 322. The water outlet mechanism includes a water outlet chamber 326, a water outlet seal 327 and a water outlet tube sheet 328. The outer circumference of the water outlet chamber 326 is provided with a water outlet interface 329, which is connected to the heat network heater 4. The water outlet seal 327 and the water outlet tube sheet 328 are respectively arranged at the two end openings of the water outlet chamber 326. The other end of the heat exchange tube bundle 321 is penetrated through the water outlet tube sheet 328 and connected to the water outlet chamber 326. The return water of the hot network circulating water is pressurized by a water pump and enters the water inlet chamber 322 from the water inlet interface 325, and then flows through the heat exchange tube bundle 321 built in the condenser 31. The exhaust steam from the turbine assembly 2 in the condenser 31 is used to heat the return water of the hot network circulating water in the heat exchange tube bundle 321, that is, the return water of the hot network circulating water absorbs the heat of the exhaust steam in the heat exchange tube bundle 321, and the heated return water of the hot network circulating water flows into the water outlet chamber 326 and flows out from the water outlet interface 329. Finally, the hot network circulating water is heated to the required temperature by using higher pressure steam such as high exhaust extraction steam, and is sent out of the factory area for external heating.

[0037] Further, continue to refer to Figure 1-Figure 3 The heat network heater 4 is provided with a reflux port, which is connected to the condenser 31. The drain in the heat network heater 4 enters the condenser 31 through the reflux port, that is, the high-temperature and high-pressure steam condenses into water after releasing heat in the heat network heater 4, and flows back to the condenser 31 through the reflux port.

[0038] Further, continue to refer to Figure 1-Figure 3 The heat exchange assembly 3 also includes a seawater heat exchanger 33 and a circulating cooling water pump 34. The input end of the circulating cooling water pump 34 is connected to seawater, the output end of the circulating cooling water pump 34 is connected to the input end of the seawater heat exchanger 33, and the output end of the seawater heat exchanger 33 is connected to seawater. The seawater heat exchanger 33 is arranged inside the condenser 31, and the seawater heat exchanger 33 is used for heat exchange between exhaust steam and seawater. The seawater enters the condenser 31 under the driving action of the circulating cooling water pump 34, and then absorbs the waste heat of the exhaust steam in the condenser 31 and is discharged into the sea.

[0039] Further, continue to refer to Figure 1-Figure 3 The steam turbine assembly 2 includes a steam turbine high pressure cylinder 21 and a steam turbine low pressure cylinder 22. The input end of the steam turbine high pressure cylinder 21 is connected to the heating assembly 1, and the output end of the steam turbine high pressure cylinder 21 is connected to the input end of the steam turbine low pressure cylinder 22. The output end of the steam turbine low pressure cylinder 22 is connected to the input end of the condenser 31 and is used to provide exhaust steam. Specifically, the generator 5 is used to provide power generation to the steam turbine high pressure cylinder 21 and the steam turbine low pressure cylinder 22. The high temperature and high pressure saturated steam provided by the heating assembly 1 enters the steam turbine assembly 2 to drive the generator to generate electricity. First, high-temperature and high-pressure saturated steam first enters the high-pressure cylinder 21 of the steam turbine to expand and do work. After doing work, the temperature and pressure of the steam are reduced. The steam turbine assembly 2 also includes a steam-water separation reheater 23. The input end of the steam-water separation reheater 23 is connected to the output end of the high-pressure cylinder 21 of the steam turbine, and the output end of the steam-water separation reheater 23 is connected to the input end of the low-pressure cylinder 22 of the steam turbine. The exhaust steam of the high-pressure cylinder 21 of the steam turbine is heated in the steam-water separation reheater 23 and then enters the low-pressure cylinder 22 of the steam turbine to continue doing work. The waste heat of the exhaust steam after doing work enters the condenser 31.

[0040] Further, continue to refer to Figure 1-Figure 3 The heating assembly 1 includes a heating mechanism and a steam generator 11. The heating mechanism is connected to the input end of the steam generator 11. The output end of the steam generator 11 is connected to the high-pressure cylinder 21 of the steam turbine. The steam generator 11 is used to provide high-temperature and high-pressure saturated steam to the high-pressure cylinder 21 of the steam turbine. Specifically, the heating mechanism includes a reactor 12 and a main pump 13. The output end of the reactor 12 is connected to the input end of the steam generator 11. The input end of the reactor 12 is connected to the output end of the main pump 13. The input end of the main pump 13 is connected to the output end of the steam generator 11. The heat generated by the nuclear fuel U-235 in the reactor 12 during the fission process is transferred to the coolant in the first circuit. After the coolant in the first circuit absorbs the heat, the temperature and pressure are increased. Then, under the drive of the main pump 13, the coolant in the steam generator 11 releases the heat to the desalted water in the second circuit. After the coolant in the first circuit releases the heat, it returns to the reactor 12 to continue to absorb heat. The desalted water in the secondary circuit on the shell side of the steam generator 11 absorbs the heat of the primary circuit coolant and becomes high-temperature and high-pressure saturated steam, which then enters the steam turbine assembly 2 to expand and perform work.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A heating system utilizing waste heat from exhaust steam of a nuclear power unit, characterized in that: include: A heating component (1), wherein the heating component (1) is used to provide saturated steam; A steam turbine component (2), the input end of the steam turbine component (2) being connected to the heat supply component (1), the steam turbine component (2) being used to generate electricity and provide exhaust steam waste heat and steam; A heat exchange component (3), the heat exchange component (3) comprising a condenser (31) and a heat network heat exchanger (32), the heat network heat exchanger (32) being arranged inside the condenser (31), the input end of the condenser (31) being connected to the exhaust steam outputted from the output end of the steam turbine component (2), the output end of the condenser (31) being connected to the heat supply component (1), the input end of the heat network heat exchanger (32) being connected to the heat network circulating water return water, and the heat network heat exchanger (32) being used to perform heat exchange between the exhaust steam and the heat network circulating water return water; A heating network heater (4), wherein the input end of the heating network heater (4) is connected to the output end of the heating network heat exchanger (32) and the exhaust steam outputted from the output end of the steam turbine assembly (2), and the output end of the heating network heater (4) is used to provide heating network circulating water supply.

2. The heating system using waste heat from exhaust steam of a nuclear power plant according to claim 1, characterized in that: The heat network heat exchanger (32) comprises a water inlet mechanism, a water outlet mechanism and a heat exchange tube bundle (321); the heat exchange tube bundle (321) is located between the water inlet mechanism and the water outlet mechanism; the input end of the water inlet mechanism is connected to the return water of the heat network circulating water; the output end of the water inlet mechanism is connected to the input end of the heat exchange tube bundle (321); the input end of the water outlet mechanism is connected to the output end of the heat exchange tube bundle (321); the output end of the water outlet mechanism is connected to the heat network heater (4); and the heat exchange tube bundle (321) is used to absorb the heat of the exhaust steam waste heat from the return water of the heat network circulating water.

3. The heating system using waste heat from nuclear power plant exhaust steam according to claim 2, characterized in that: The water inlet mechanism comprises a water inlet chamber (322), a water inlet seal (323) and a water inlet tube plate (324); a water inlet interface (325) is provided on the outer peripheral surface of the water inlet chamber (322); the water inlet interface (325) is connected to the return water of the heat network circulating water; the water inlet seal (323) and the water inlet tube plate (324) are respectively arranged at the two end openings of the water inlet chamber (322); one end of the heat exchange tube bundle (321) is passed through the water inlet tube plate (324) and connected to the water inlet chamber (322).

4. The heating system using waste heat from nuclear power plant exhaust steam according to claim 2, characterized in that: The water outlet mechanism comprises a water outlet chamber (326), a water outlet seal (327) and a water outlet tube plate (328); a water outlet interface (329) is provided on the outer peripheral surface of the water outlet chamber (326); the water outlet interface (329) is connected to the heat network heater (4); the water outlet seal (327) and the water outlet tube plate (328) are respectively arranged at two end openings of the water outlet chamber (326); the other end of the heat exchange tube bundle (321) is passed through the water outlet tube plate (328) and connected to the water outlet chamber (326).

5. The heating system using waste heat from nuclear power plant exhaust steam according to claim 1, characterized in that: The heating network heater (4) is provided with a reflux port, the reflux port being connected to the condenser (31), and the drain water in the heating network heater (4) enters the condenser (31) through the reflux port.

6. The heating system using waste heat from exhaust steam of a nuclear power plant according to claim 1, characterized in that: The heat exchange component (3) further comprises a seawater heat exchanger (33) and a circulating cooling water pump (34); the input end of the circulating cooling water pump (34) is connected to seawater; the output end of the circulating cooling water pump (34) is connected to the input end of the seawater heat exchanger (33); the output end of the seawater heat exchanger (33) is connected to seawater; the seawater heat exchanger (33) is arranged inside the condenser (31); and the seawater heat exchanger (33) is used for heat exchange between exhaust steam and seawater.

7. The heating system using waste heat from nuclear power plant exhaust steam according to claim 1, characterized in that: The steam turbine assembly (2) comprises a steam turbine high-pressure cylinder (21) and a steam turbine low-pressure cylinder (22); the input end of the steam turbine high-pressure cylinder (21) is connected to the heat supply assembly (1); the output end of the steam turbine high-pressure cylinder (21) is connected to the input end of the steam turbine low-pressure cylinder (22); the output end of the steam turbine low-pressure cylinder (22) is connected to the input end of the condenser (31) and is used to provide exhaust steam waste heat.

8. The heating system using waste heat from exhaust steam of a nuclear power plant according to claim 7, characterized in that: The steam turbine assembly (2) further comprises a steam-water separation reheater (23), the input end of the steam-water separation reheater (23) being connected to the output end of the steam turbine high-pressure cylinder (21), and the output end of the steam-water separation reheater (23) being connected to the input end of the steam turbine low-pressure cylinder (22).

9. The heating system using waste heat from nuclear power plant according to claim 7, characterized in that: The heating assembly (1) comprises a heating mechanism and a steam generator (11), wherein the heating mechanism is connected to an input end of the steam generator (11), and an output end of the steam generator (11) is connected to a high-pressure cylinder (21) of the steam turbine, and the steam generator (11) is used to provide high-temperature and high-pressure saturated steam to the high-pressure cylinder (21) of the steam turbine.

10. The heating system using waste heat from nuclear power plant exhaust steam according to claim 9, characterized in that: The heat supply mechanism comprises a reactor (12) and a main pump (13), the output end of the reactor (12) being connected to the input end of the steam generator (11), the input end of the reactor (12) being connected to the output end of the main pump (13), and the input end of the main pump (13) being connected to the output end of the steam generator (11).

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