Method, device and electronic equipment for external supply of industrial steam

Abstract

The present disclosure provides an industrial steam production method and device, and an electronic device, which are applied to a pressurized water reactor nuclear power unit. The method comprises the following steps: extracting a first part of steam from a main steam pipeline of the pressurized water reactor nuclear power unit and delivering the first part of steam to a turbine; driving a steam compressor by the turbine; obtaining main steam after the steam expands and does work in the turbine; processing the main steam by using a steam-water separator to obtain saturated water and separated steam; inputting the separated steam into the steam compressor according to steam demand information to perform temperature and pressure increasing processing to obtain superheated steam; and inputting the superheated steam into a throttling device to obtain industrial steam. According to the present disclosure, part of the high-grade heat energy of the saturated steam can be converted into mechanical energy by the turbine to work on the saturated steam, so that the superheated steam with higher temperature and pressure can be produced more efficiently as the industrial steam, and the obtained industrial steam is more suitable for long-distance transmission.

Description

Technical Field

[0001] This disclosure relates to the field of nuclear energy application technology, and in particular to a method, apparatus and electronic equipment for producing industrial steam for external supply. Background Technology

[0002] Currently, steam is widely used in modern industry. With the increasing number of nuclear power units and the continuous development of nuclear energy application technology, the multi-path application of nuclear energy has become relatively mature, and society's demand for nuclear steam is increasing.

[0003] In related technologies, the heat exchange is usually achieved by extracting secondary loop steam and passing it through a multi-stage heat exchanger to produce superheated steam for external supply as industrial steam.

[0004] In this way, the parameters of industrial steam are limited, as are the steam transport distance and utilization rate. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, the purpose of this disclosure is to propose a method, apparatus, electronic equipment, storage medium and computer program product for producing external industrial steam, which can be applied to pressurized water reactor nuclear power units. It can convert part of the high-grade thermal energy of saturated steam into mechanical energy to do work on saturated steam as input energy of steam turbine, thereby producing superheated steam with higher temperature and pressure more efficiently as external industrial steam, making the obtained external industrial steam more suitable for long-distance transmission.

[0007] The first aspect of this disclosure proposes a method for producing externally supplied industrial steam, applied to a pressurized water reactor nuclear power unit. The method includes: extracting a first portion of steam from the main steam pipeline of the pressurized water reactor nuclear power unit and conveying it to a turbine; the turbine driving a steam compressor; the first portion of steam expanding and doing work in the turbine to obtain main steam; acquiring steam demand information, wherein the steam demand information describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam; processing the main steam using a steam-water separator to obtain saturated water and separated steam; inputting the separated steam into a steam compressor for heating and pressurization processing according to the steam demand information to obtain superheated steam; and inputting the superheated steam into a throttling device for processing to obtain externally supplied industrial steam, wherein the steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam meet the steam demand information.

[0008] The method for producing externally supplied industrial steam according to the first aspect of this disclosure involves extracting a first portion of steam from the main steam pipeline of a pressurized water reactor nuclear power unit and transporting it to a turbine. The turbine drives a steam compressor, and the first portion of steam expands and performs work within the turbine to obtain main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam. The main steam is processed using a steam-water separator to obtain saturated water and separated steam. Based on the steam demand information, the separated steam is input into a steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is then input into a throttling device for further processing to obtain externally supplied industrial steam. The steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam meet the steam demand information. This method can convert some of the high-grade thermal energy of the saturated steam into mechanical energy to perform work on the saturated steam, thereby producing superheated steam with higher temperature and pressure for external supply more efficiently. This makes the obtained externally supplied industrial steam more suitable for long-distance transmission.

[0009] The second aspect of this disclosure provides an external industrial steam production device for use in pressurized water reactor nuclear power units. The device includes: a first processing module, which extracts a first portion of steam from the main steam pipeline of the pressurized water reactor nuclear power unit and delivers it to a turbine. The turbine drives a steam compressor, and the first portion of steam expands and performs work in the turbine to obtain main steam; a first acquisition module, which acquires steam demand information, wherein the steam demand information describes the required external industrial steam pressure, steam temperature, and steam demand amount; a second processing module, which processes the main steam using a steam-water separator to obtain saturated water and separated steam; a third processing module, which, according to the steam demand information, inputs the separated steam into a steam compressor for heating and pressurization to obtain superheated steam; and a fourth processing module, which inputs the superheated steam into a throttling device for processing to obtain external industrial steam, wherein the external industrial steam pressure, steam temperature, and steam demand amount satisfy the steam demand information.

[0010] The external industrial steam production device proposed in the second aspect of this disclosure draws a first portion of steam from the main steam pipeline of a pressurized water reactor nuclear power unit and delivers it to a turbine. The turbine drives a steam compressor, and the first portion of steam expands and performs work within the turbine to obtain main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the external industrial steam. The main steam is processed using a steam-water separator to obtain saturated water and separated steam. Based on the steam demand information, the separated steam is input into a steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is then input into a throttling device for further processing to obtain external industrial steam. The steam pressure, steam temperature, and steam quantity of the external industrial steam meet the steam demand information. It can convert some of the high-grade thermal energy of the saturated steam into mechanical energy to perform work on the saturated steam, thereby producing superheated steam with higher temperature and pressure for external industrial steam more efficiently. This makes the obtained external industrial steam more suitable for long-distance transmission.

[0011] A third aspect of this disclosure provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the external industrial steam production method as proposed in the first aspect of this disclosure.

[0012] The fourth aspect of this disclosure provides a non-transitory computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the externally supplied industrial steam production method as proposed in the first aspect of this disclosure.

[0013] The fifth aspect of this disclosure provides a computer program product that, when executed by a processor, performs an externally supplied industrial steam production method as described in the first aspect of this disclosure.

[0014] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic flowchart of an embodiment of the method for producing industrial steam from external sources according to this disclosure;

[0017] Figure 2 This is a schematic flowchart of a method for producing industrial steam from external sources according to another embodiment of this disclosure;

[0018] Figure 3 This is a schematic diagram of the structure of a pressurized water reactor nuclear steam superheating and radiation monitoring system according to an embodiment of this disclosure;

[0019] Figure 4 This is a schematic diagram of another pressurized water reactor nuclear steam overheating and radiation monitoring system in this embodiment of the present disclosure;

[0020] Figure 5 This is a schematic flowchart of a method for producing industrial steam from external sources according to another embodiment of this disclosure;

[0021] Figure 6 This is a schematic diagram of the structure of an externally supplied industrial steam production device according to an embodiment of this disclosure;

[0022] Figure 7 This is a schematic diagram of the structure of an externally supplied industrial steam production device according to another embodiment of this disclosure;

[0023] Figure 8 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. Detailed Implementation

[0024] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0025] Figure 1 This is a schematic flowchart of an embodiment of the method for producing industrial steam from external sources.

[0026] It should be noted that the main body executing the external industrial steam production method in this embodiment is an external industrial steam production device. This device can be implemented by software and / or hardware, and can be configured in electronic devices, without any limitation.

[0027] like Figure 1 As shown, the method for producing industrial steam for external supply includes:

[0028] S101: The first part of the steam is drawn from the main steam pipe of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. The first part of the steam expands and does work in the turbine to obtain the main steam.

[0029] The main steam obtained after processing by a turbine-driven steam compressor is saturated steam.

[0030] The embodiments disclosed herein can be applied to pressurized water reactor nuclear power units. The primary loop of the pressurized water reactor nuclear power unit is located inside the containment. The steam generator of the pressurized water reactor nuclear power unit is a device that connects the primary and secondary loops. The fluid in the primary loop circulates between the pressure vessel and the steam generator under the drive of the main pump. The heat from the core fission in the pressure vessel is transferred to the secondary loop through the steam generator. Saturated steam is generated on the secondary side of the steam generator and enters the high-pressure cylinder of the turbine. After doing work, the steam is reheated by the steam-water separator reheater and then enters the low-pressure cylinder of the turbine to continue doing work, driving the generator to generate electricity.

[0031] In this embodiment, a portion of steam can be drawn from the main steam pipeline as the first portion of steam and input into a turbine. The turbine drives a steam compressor to increase the enthalpy of the steam that has been reduced by the turbine into the steam that has been compressed by the steam compressor. After the first portion of steam expands and does work in the turbine, it becomes the main steam, thus improving the quality of the steam and obtaining the processed main steam. The main steam is saturated steam, and the humidity of the main steam discharged after it has been compressed by the turbine increases.

[0032] S102: Obtain steam demand information, wherein the steam demand information describes the steam pressure value, steam temperature value and steam demand amount of the required external industrial steam.

[0033] Among them, steam demand information refers to data information used to describe the steam pressure, steam temperature and steam demand of the required external industrial steam.

[0034] For example, industrial enterprises have a large demand for steam below 1.6 MPa, and pressurized water reactor nuclear power units mainly operate in the wet steam zone and the high-pressure cylinder exhaust pressure is below 1 MPa. Therefore, the steam pressure of the externally supplied industrial steam described in the steam demand information of this disclosure embodiment can be in a relatively high pressure range below 1.6 MPa.

[0035] In this disclosure, steam demand information can be obtained, which can describe a steam pressure demand range, a steam temperature value demand range, and a steam quantity demand range. For example, the steam demand information can describe that the required external industrial steam is steam with low steam pressure but high demand, and can describe the required temperature value demand range of the required external industrial steam.

[0036] S103: The main steam is processed using a steam-water separator to obtain saturated water and separated steam.

[0037] In this embodiment of the disclosure, a first portion of steam is drawn from the main steam pipeline of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor to obtain the main steam and acquire steam demand information. Based on the steam demand information, the main steam is processed by a steam-water separator to obtain saturated water and separated steam.

[0038] In this embodiment of the disclosure, when using a steam-water separator to process main steam, the main steam can be input into the steam-water separator for processing to obtain saturated water and separated steam after processing by the steam separator.

[0039] In other embodiments, a portion of the steam discharged from the high-pressure cylinder of the steam turbine can be extracted and transported together with the main steam to a steam-water separator for processing to obtain saturated water and separated steam.

[0040] S104: Based on the steam demand information, the separated steam is fed into the steam compressor for heating and pressurization to obtain superheated steam.

[0041] In this embodiment of the present disclosure, after processing the main steam using a steam-water separator to obtain saturated water and separated steam based on the steam demand information, the separated saturated water can be fed into a deaerator or feedwater heater for further processing, and the separated steam can be fed into a steam compressor for heating and pressurization to obtain superheated steam.

[0042] In other embodiments, when the steam demand information indicates that the required external industrial steam pressure is low but the demand is large, a portion of the steam discharged from the high-pressure cylinder of the steam turbine is extracted and transported together with the main steam to a steam-water separator for processing to obtain saturated water and separated steam. The separated steam is then input into a steam compressor for heating and pressurization to obtain superheated steam.

[0043] S105: Superheated steam is input into a throttling device for processing to obtain external industrial steam, wherein the steam pressure, steam temperature and steam demand of the external industrial steam meet the steam demand information.

[0044] In this embodiment, after the separated steam is fed into a steam compressor for heating and pressurization to obtain superheated steam, the superheated steam can be fed into a throttling device for further processing to obtain industrial steam for external supply. The pressure and temperature parameters of the industrial steam obtained after processing by the throttling device meet the requirements for external steam supply.

[0045] In this embodiment, a first portion of steam is drawn from the main steam pipeline of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. After the first portion of steam expands and does work in the turbine, it becomes the main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam. The main steam is processed by a steam-water separator to obtain saturated water and separated steam. According to the steam demand information, the separated steam is input into the steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is input into a throttling device for processing to obtain externally supplied industrial steam. The steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam meet the steam demand information. It is possible to convert part of the high-grade thermal energy of the saturated steam into mechanical energy to do work on the saturated steam as input energy of the steam turbine, thereby producing superheated steam with higher temperature and pressure more efficiently as externally supplied industrial steam, making the obtained externally supplied industrial steam more suitable for long-distance transmission.

[0046] Figure 2 This is a schematic flowchart of an externally supplied industrial steam production method according to another embodiment of this disclosure.

[0047] like Figure 2 As shown, the method for producing industrial steam for external supply includes:

[0048] S201: The first part of the steam is drawn from the main steam pipe of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. The first part of the steam expands and does work in the turbine to obtain the main steam.

[0049] S202: Obtain steam demand information, which describes the required external industrial steam pressure, steam temperature, and steam demand.

[0050] S203: The main steam is processed using a steam-water separator to obtain saturated water and separated steam.

[0051] The specific descriptions of S201 to S203 can be found in the above embodiments, and will not be repeated here.

[0052] S204: If the steam demand information indicates that the required external industrial steam is a first steam pressure value, a first steam temperature value, and a first demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam.

[0053] In this embodiment of the disclosure, if the steam demand information indicates that the required external industrial steam is a first steam pressure value, a first steam temperature value, and a first demand amount, wherein the first steam pressure value and the first demand amount are a higher steam pressure value and a lower steam demand amount, and the first steam temperature value is the steam temperature value corresponding to the first steam pressure value and the first demand amount, then the separated steam is the separated steam obtained after the main steam is sent to the steam-water separator for processing.

[0054] For example, such as Figure 3 As shown, Figure 3 This is a schematic diagram of a pressurized water reactor nuclear steam superheat and radiation monitoring system according to an embodiment of this disclosure. In the diagram, 1 is the containment vessel, 2 is the pressure vessel, 3 is the steam generator, 4 is the high-pressure turbine cylinder, 5 is the steam-water separator reheater, 6 is the low-pressure turbine cylinder, 7 is the generator, 11 is the cooler, 21 is the turbine, 22 is the steam-water separator; 23 is the steam compressor, 24 is the throttling device, 25 is the buffer tank, and 31 and 32 are quick-closing valves. A portion of steam is drawn from the main steam pipeline as the first portion of steam and enters the turbine 21. The turbine 21 drives the steam compressor... The compressor 23 increases the enthalpy of the steam reduced by the turbine 21 into the steam passing through the steam compressor 23, thereby improving the quality of the steam and obtaining the main steam. The main steam is saturated steam. After the main steam is discharged from the turbine 21, the humidity increases. The main steam can then be sent to the steam-water separator 22 for processing to obtain saturated water and separated steam. The saturated water separated by the steam-water separator 22 is removed from the aerator or feedwater heater. The separated steam enters the steam compressor 23 for heating and pressurization to obtain superheated steam. The superheated steam is sent to the throttling device 24 for processing to obtain industrial steam for external supply with pressure and temperature parameters that meet the requirements for external supply.

[0055] S205: If the steam demand information indicates that the required external industrial steam is the second steam pressure value, the second steam temperature value, and the second demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam and the second part of the steam, wherein the second part of the steam is extracted from the exhaust steam of the high-pressure cylinder of the steam turbine.

[0056] The second part of the steam refers to the portion of steam extracted from the exhaust steam of the high-pressure cylinder of the steam turbine.

[0057] In this embodiment of the disclosure, if the steam demand information indicates that the required external industrial steam is a second steam pressure value, a second steam temperature value, and a second demand amount, then a portion of steam can be extracted from the exhaust steam of the high-pressure cylinder of the steam turbine as the second portion of steam. The second portion of steam and the main steam are then transported together to a steam-water separator for processing to obtain saturated water and separated steam.

[0058] For example, such as Figure 4 As shown, Figure 4 This is a schematic diagram of another pressurized water reactor nuclear steam superheating and radiation monitoring system in this embodiment. It can extract part of the exhaust steam from the high-pressure cylinder 4 of the steam turbine, and together with the main steam discharged from the turbine 21, enter the steam compressor 23 through the steam-water separator 22. After superheating, it passes through the throttling device 24 to obtain external industrial steam with pressure and temperature parameters that meet the requirements for external supply.

[0059] Optionally, in some embodiments, the second steam pressure value is less than the first steam pressure value, and the second demand is greater than the first demand.

[0060] S206: The separated steam is fed into a steam compressor for heating and pressurization to obtain superheated steam.

[0061] S207: Superheated steam is input into a throttling device for processing to obtain externally supplied industrial steam, wherein the steam pressure and steam demand of the externally supplied industrial steam meet the steam demand information.

[0062] The descriptions of S206 and S207 can be found in the above embodiments, and will not be repeated here.

[0063] In this embodiment, a first portion of steam is drawn from the main steam pipeline of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. After the first portion of steam expands and does work in the turbine, it becomes the main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam. The main steam is processed using a steam-water separator to obtain saturated water and separated steam. According to the steam demand information, the separated steam is input into the steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is then input into a throttling device for further processing to obtain externally supplied industrial steam. The steam pressure and steam temperature of the externally supplied industrial steam are specified in the provided text. The method for producing industrial steam for external supply, based on the steam demand information, can convert some of the high-grade thermal energy of saturated steam into mechanical energy to do work on the saturated steam, thereby producing superheated steam with higher temperature and pressure more efficiently. This makes the resulting industrial steam more suitable for long-distance transmission. The method for producing industrial steam for external supply proposed in this disclosure can convert some of the high-grade thermal energy of saturated steam into mechanical energy to do work on the saturated steam without changing the structure of the traditional pressurized water reactor system, thereby producing superheated steam with higher temperature and pressure. This makes it more suitable for long-distance transmission and meets the needs of long-distance industrial users. It has the characteristics of simple structure and high energy utilization.

[0064] Figure 5 This is a schematic flowchart of an externally supplied industrial steam production method according to another embodiment of this disclosure.

[0065] like Figure 5 As shown, the method for producing industrial steam for external supply includes:

[0066] S501: The first part of the steam is drawn from the main steam pipe of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. The first part of the steam expands and does work in the turbine to obtain the main steam.

[0067] S502: Obtain steam demand information, wherein the steam demand information describes the steam pressure value, steam temperature value and steam demand amount of the required external industrial steam.

[0068] S503: The main steam is processed using a steam-water separator to obtain saturated water and separated steam.

[0069] S504: Based on the steam demand information, the separated steam is fed into the steam compressor for heating and pressurization to obtain superheated steam.

[0070] S505: Superheated steam is input into a throttling device for processing to obtain external industrial steam, wherein the steam pressure, steam temperature and steam demand of the external industrial steam meet the steam demand information.

[0071] For a detailed description of S501 to S505, please refer to the above embodiments, which will not be repeated here.

[0072] S506: Install radiation monitoring instruments to monitor the radioactivity of the secondary loop of the pressurized water reactor nuclear power unit and obtain radioactivity measurement values. The radiation monitoring instruments are installed next to the outer pipe of the insulation layer of the drain pipe between the cooler and the steam generator.

[0073] The radiation monitoring instrument is located next to the outer pipe of the insulation layer of the sewage pipe between the cooler and the steam generator.

[0074] In this embodiment, a radiation monitoring instrument can be installed near the outer pipe of the insulation layer of the drain pipe between the cooler and the steam generator to monitor the radioactivity of the secondary loop of the pressurized water reactor nuclear power unit. A combination of existing radiation monitoring instruments used in the nuclear power plant and newly added secondary loop radiation monitoring instruments can be used to achieve reliable, redundant, and rapid monitoring of leaks in the primary and secondary loop heat transfer tubes and the radioactivity of the secondary loop. Each steam generator of the pressurized water reactor nuclear power unit is connected to a drain pipe. The radioactive material discharged from the steam generator enters the continuous electrostatic desalination (EDI) module through the cooler for processing. During the process of the radioactive material changing from liquid to gas phase in the steam generator, there is a certain gas-water partitioning. In a conservative analysis, considering that the gas-water partition factor of iodine is 100 and that of aerosols is 200, the radioactivity concentration of the fluid in the steam generator drain pipe is 100 times that of the steam condensate, allowing for more sensitive monitoring of steam radioactivity.

[0075] For example, such as Figure 4 As shown, in order to minimize the distance of the sewage flow from the steam generator 3 to the radiation monitoring instrument and achieve rapid measurement, redundant radiation monitoring instruments 32 are added as close as possible to the containment in the auxiliary plant before the cooler 11. Redundancy can be used to improve measurement reliability. Since the object being measured is a high-temperature liquid, the detector cannot be immersed in the liquid being measured, and the response time of the instrument is required to be short. The high-temperature liquid requires a long cooling time. Therefore, the measurement is carried out next to the outer pipe of the insulation layer of the sewage pipe of the steam generator. A large-volume sodium iodide detector is used to increase the detection efficiency, and lead shielding is used to reduce the detector background, thereby lowering the detection limit and reducing the response time.

[0076] S507: When the measured radioactivity value is greater than or equal to the preset radioactivity threshold, close the quick-closing valve of the industrial steam system.

[0077] In this embodiment of the disclosure, a preset radioactivity threshold can be set in advance to monitor and process the radioactivity measurement value in real time. The radioactivity measurement value and the preset radioactivity threshold can be compared and processed. If the radioactivity measurement value is greater than or equal to the preset radioactivity threshold, the quick-closing valve of the industrial steam system is closed to prevent the leakage of radioactive materials.

[0078] S508: Install a nitrogen-16 radiation detector at the steam outlet pipe of the steam generator in a pressurized water reactor nuclear power unit to detect the measured leakage rate of the heat transfer tubes of the steam generator.

[0079] Among them, the measured leakage rate refers to the leakage rate data obtained by using a nitrogen-16 radiation detector to detect the leakage rate of the heat transfer tube in real time.

[0080] In this embodiment of the disclosure, a nitrogen-16 (N-16) radiation detector can be installed at the steam outlet pipe of each steam generator in a pressurized water reactor nuclear power unit to detect the leakage rate of the heat transfer tubes of the steam generator.

[0081] S509: Obtain the preset leakage rate threshold.

[0082] The preset leakage rate threshold refers to the leakage rate threshold value set in advance for the heat transfer tubes of the steam generator. This preset leakage rate can be adaptively set according to the on-site operating conditions.

[0083] In this embodiment of the disclosure, the pure generator set allows for a certain leakage rate in the heat transfer tubes of the steam generator. Therefore, the existing alarm value does not meet the needs of external industrial steam supply and needs to be modified to add a lower alarm value. A more suitable alarm value can be set as the preset leakage rate threshold according to the on-site operation conditions of the nuclear power plant.

[0084] S510: Based on the measured leakage rate and the preset leakage rate threshold, an early warning system is implemented for leakage in the heat transfer tubes of the steam generator.

[0085] In this embodiment of the disclosure, when the leakage of the heat transfer tube of the steam generator is warned based on the measured leakage rate and the preset leakage rate threshold, the measured leakage rate and the preset leakage rate threshold can be compared numerically. If the measured leakage rate is greater than or equal to the preset leakage rate threshold, an alarm can be triggered, indicating that the leakage rate of the heat transfer tube may lead to subsequent risk events.

[0086] Optionally, in some embodiments, if the measured leakage rate is greater than or equal to a preset leakage rate threshold, the quick-closing valve of the industrial steam system is triggered to shut down.

[0087] In this embodiment of the disclosure, if any one of the existing radiation monitoring instruments for monitoring the radioactivity of the secondary loop in the nuclear power plant and the newly added radiation monitoring instruments for the secondary loop alarms, it will trigger the closure of the industrial steam quick-closing valves 31 and 32. The purpose of the redundant configuration of the quick-closing valves is to ensure reliable closure and isolation to prevent radioactive nuclides from leaving the plant.

[0088] Optionally, in some embodiments, a buffer tank is provided between the throttling device and the quick-closing valve.

[0089] Among them, the buffer tank can be used to reduce the flow rate of the sewage flow.

[0090] In this embodiment of the disclosure, a buffer tank can be provided between the throttling device and the quick-closing valve to reduce the flow rate of the sewage flow and prevent radioactive nuclides from leaving the factory.

[0091] For example, it takes a certain amount of time for the wastewater to flow from the steam generator to the radiation monitor 32, and the radiation detector response, signal processing and transmission, and valve closing also take a certain amount of time. The diameter of the industrial steam pipeline in the nuclear power plant can be reasonably increased to reduce the steam flow rate. In addition, the time for the steam to remain in the plant can be set in the buffer tank 25 to ensure that once radioactivity is detected, there is enough time to isolate the steam in the plant area.

[0092] In this embodiment, a first portion of steam is drawn from the main steam pipeline of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. After the first portion of steam expands and does work in the turbine, it becomes the main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam. The main steam is processed using a steam-water separator to obtain saturated water and separated steam. According to the steam demand information, the separated steam is input into the steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is then input into a throttling device for processing to obtain externally supplied industrial steam. The steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam meet the steam demand information, and can partially saturate the steam. High-grade thermal energy of steam is converted into mechanical energy by the turbine input to perform work on saturated steam, thereby producing superheated steam with higher temperature and pressure more efficiently for external industrial steam supply. This makes the resulting external industrial steam more suitable for long-distance transmission. The external industrial steam production method proposed in this disclosure adopts a reliable and rapid radiation monitoring scheme to form a reliable isolated industrial steam network for detecting leaks in the heat transfer tubes of the steam generator. This makes direct external steam supply from pressurized water reactor units technically feasible and provides a reliable production scheme for nuclear power steam supply. By utilizing the distribution ratio of radioactive nuclides in the steam generator's steam and water, and measuring the radioactivity of the steam generator's wastewater, the radioactivity activity concentration of the steam is sensitively monitored to ensure that the radioactivity of the external industrial steam meets radiation protection targets.

[0093] Figure 6 This is a schematic diagram of the structure of an externally supplied industrial steam production device according to an embodiment of this disclosure.

[0094] like Figure 6 As shown, the externally supplied industrial steam production unit 60 includes:

[0095] The first processing module 601 is used to extract a first part of steam from the main steam pipe of the pressurized water reactor nuclear power unit and transport it to the turbine. The turbine drives the steam compressor. The first part of steam expands and does work in the turbine to obtain the main steam.

[0096] The first acquisition module 602 is used to acquire steam demand information, wherein the steam demand information describes the steam pressure value, steam temperature value and steam demand amount of the required external industrial steam.

[0097] The second processing module 603 is used to process the main steam using a steam-water separator to obtain saturated water and separated steam.

[0098] The third processing module 604 is used to input the separated steam into the steam compressor for heating and pressurization processing according to the steam demand information to obtain superheated steam.

[0099] The fourth processing module 605 is used to input superheated steam into a throttling device for processing to obtain externally supplied industrial steam, wherein the steam pressure, steam temperature and steam demand of the externally supplied industrial steam meet the steam demand information.

[0100] In some embodiments of this disclosure, the third processing module 604 is specifically used for:

[0101] If the steam demand information indicates that the required external industrial steam is a first steam pressure value, a first steam temperature value, and a first demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam;

[0102] If the steam demand information indicates that the required external industrial steam is a second steam pressure value, a second steam temperature value, and a second demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam and the second part of the steam, wherein the second part of the steam is extracted from the exhaust steam of the high-pressure cylinder of the steam turbine.

[0103] The separated steam is fed into the steam compressor for heating and pressurization to obtain superheated steam.

[0104] In some embodiments of this disclosure, the second steam pressure value is less than the first steam pressure value, and the second demand is greater than the first demand.

[0105] In some embodiments of this disclosure, such as Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of an externally supplied industrial steam production device according to another embodiment of this disclosure, which also includes:

[0106] The monitoring module 606 is used to install radiation monitoring instruments to monitor the radioactivity of the secondary loop of the pressurized water reactor nuclear power unit and obtain radioactivity measurement values. The radiation monitoring instruments are installed next to the outer pipe of the insulation layer of the sewage discharge pipe between the cooler and the steam generator.

[0107] The fifth processing module 607 closes the quick-closing valve of the industrial steam system when the measured radioactivity value is greater than or equal to a preset radioactivity threshold.

[0108] In some embodiments of this disclosure, it also includes:

[0109] The sixth processing module 608 is used to install a nitrogen-16 radiation detector at the steam outlet pipe of the steam generator of the pressurized water reactor nuclear power unit to detect the measured leakage rate of the heat transfer tube of the steam generator.

[0110] The second acquisition module 609 is used to acquire a preset leakage rate threshold.

[0111] The seventh processing module 610 is used to provide early warning processing for the leakage of the heat transfer tubes of the steam generator based on the measured leakage rate and the preset leakage rate threshold.

[0112] In some embodiments of this disclosure, the seventh processing module 610 is specifically used for:

[0113] If the measured leakage rate is greater than or equal to the preset leakage rate threshold, the fast-closing valve of the pressurized water reactor nuclear power plant industrial steam system will be triggered to shut down.

[0114] In some embodiments of this disclosure, a buffer tank is provided between the throttling device and the quick-closing valve.

[0115] With the above Figures 1 to 5 Corresponding to the external industrial steam production method provided in the embodiments, this disclosure also provides an external industrial steam production apparatus. Since the external industrial steam production apparatus provided in the embodiments of this disclosure is similar to the one described above... Figures 1 to 5 The external industrial steam production method provided in the embodiments corresponds to the external industrial steam production method provided in the embodiments of this disclosure. Therefore, the implementation of the external industrial steam production method is also applicable to the external industrial steam production apparatus provided in the embodiments of this disclosure, and will not be described in detail in the embodiments of this disclosure.

[0116] In this embodiment, a first portion of steam is drawn from the main steam pipeline of the pressurized water reactor nuclear power unit and transported to the turbine. The turbine drives the steam compressor. After the first portion of steam expands and does work in the turbine, it becomes the main steam. Steam demand information is obtained, which describes the required steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam. The main steam is processed by a steam-water separator to obtain saturated water and separated steam. According to the steam demand information, the separated steam is input into the steam compressor for heating and pressurization to obtain superheated steam. The superheated steam is input into a throttling device for processing to obtain externally supplied industrial steam. The steam pressure, steam temperature, and steam quantity of the externally supplied industrial steam meet the steam demand information. It is possible to convert part of the high-grade thermal energy of the saturated steam into mechanical energy to do work on the saturated steam as input energy of the steam turbine, thereby producing superheated steam with higher temperature and pressure more efficiently as externally supplied industrial steam, making the obtained externally supplied industrial steam more suitable for long-distance transmission.

[0117] To implement the above embodiments, this disclosure also proposes a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the external industrial steam production method proposed in the foregoing embodiments of this disclosure.

[0118] To implement the above embodiments, this disclosure also proposes a computer program product that, when executed by an instruction processor, performs the external industrial steam production method as proposed in the foregoing embodiments of this disclosure.

[0119] Figure 8 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown.

[0120] Figure 8 The computer device 12 shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments disclosed herein.

[0121] like Figure 8 As shown, the computer device 12 is represented in the form of a general-purpose computing device. The components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, system memory 28, and a bus 18 connecting different system components (including system memory 28 and processing unit 16).

[0122] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0123] Computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer device 12, including volatile and non-volatile media, removable and non-removable media.

[0124] Memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and / or cache memory 32. Computer device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (…). Figure 8 Not shown; usually referred to as a "hard drive".

[0125] although Figure 8 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disc drive for reading and writing to a removable non-volatile optical disc (e.g., a compact disc read-only memory (CD-ROM), a digital video disc read-only memory (DVD-ROM), or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of this disclosure.

[0126] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of this disclosure.

[0127] Computer device 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable human interaction with the computer device 12, and / or with any device that enables the computer device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, computer device 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0128] The processing unit 16 executes various functional applications and parameter information determination by running programs stored in the system memory 28, such as implementing the external industrial steam production method mentioned in the foregoing embodiments.

[0129] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0130] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0131] It should be understood that various parts of this disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0132] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0133] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0134] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0135] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0136] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A method for producing industrial steam for external supply, characterized in that, Applied to pressurized water reactor nuclear power units, the method includes: A first portion of steam is drawn from the main steam pipe of the pressurized water reactor nuclear power unit and transported to the turbine, which drives a steam compressor. The first portion of steam expands and does work in the turbine to obtain the main steam. Obtain steam demand information, wherein the steam demand information describes the required external industrial steam pressure value, steam temperature value, and steam demand amount; The main steam is processed using a steam-water separator to obtain saturated water and separated steam. Based on the steam demand information, the separated steam is fed into the steam compressor for heating and pressurization to obtain superheated steam; The superheated steam is fed into a throttling device for processing to obtain externally supplied industrial steam, wherein the steam pressure, steam temperature and steam demand of the externally supplied industrial steam meet the steam demand information. The pressurized water reactor nuclear power unit includes a high-pressure turbine cylinder, which is an independent device connected in parallel with the turbine. The process of inputting the separated steam into the steam compressor for heating and pressurization based on the steam demand information to obtain superheated steam includes: If the steam demand information indicates that the required external industrial steam is a first steam pressure value, a first steam temperature value, and a first demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam. If the steam demand information indicates that the required external industrial steam is a second steam pressure value, a second steam temperature value, and a second demand amount, then the separated steam is obtained by the steam-water separator after processing the main steam and the second part of the steam, wherein the second part of the steam is extracted from the exhaust steam of the high-pressure cylinder of the steam turbine. The separated steam is fed into the steam compressor for heating and pressurization to obtain superheated steam.

2. The method as described in claim 1, characterized in that, The second steam pressure value is less than the first steam pressure value, and the second demand is greater than the first demand.

3. The method as described in claim 1, characterized in that, Also includes: Radiation monitoring instruments are installed to monitor the radioactivity of the secondary loop of the pressurized water reactor nuclear power unit and obtain radioactivity measurement values. The radiation monitoring instruments are installed next to the outer pipe of the insulation layer of the sewage discharge pipe between the cooler and the steam generator. If the measured radioactivity value is greater than or equal to a preset radioactivity threshold, the quick-closing valve of the industrial steam system is closed.

4. The method as described in claim 3, characterized in that, Also includes: A nitrogen-16 radiation detector is installed at the steam outlet pipe of the steam generator of the pressurized water reactor nuclear power unit to detect the measured leakage rate of the heat transfer tube of the steam generator. Obtain the preset leakage rate threshold; Based on the measured leakage rate and the preset leakage rate threshold, an early warning system is implemented for the leakage of the heat transfer tubes of the steam generator.

5. The method as described in claim 4, characterized in that, The step of providing early warning of leakage in the heat transfer tubes of the steam generator based on the measured leakage rate and the preset leakage rate threshold includes: If the measured leakage rate is greater than or equal to the preset leakage rate threshold, the quick-closing valve of the industrial steam system is triggered to close.

6. The method as described in claim 5, characterized in that, A buffer tank is provided between the throttling device and the quick-closing valve.

7. An externally supplied industrial steam production device, characterized in that, The apparatus, which operates using the external industrial steam production method described in any one of claims 1-6 and is applied to a pressurized water reactor nuclear power unit, comprises: The first processing module extracts a first portion of steam from the main steam pipe of the pressurized water reactor nuclear power unit and delivers it to the turbine. The turbine drives a steam compressor, and the first portion of steam expands and does work in the turbine to obtain the main steam. The first acquisition module is used to acquire steam demand information, wherein the steam demand information describes the steam pressure value, steam temperature value and steam demand amount of the required external industrial steam. The second processing module is used to process the main steam using a steam-water separator to obtain saturated water and separated steam. The third processing module is used to input the separated steam into the steam compressor for heating and pressurization processing according to the steam demand information to obtain superheated steam; The fourth processing module is used to input the superheated steam into a throttling device for processing to obtain externally supplied industrial steam, wherein the steam pressure, steam temperature and steam demand of the externally supplied industrial steam meet the steam demand information.

8. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method for producing externally supplied industrial steam as described in any one of claims 1-6.

Images