CN115493665A - A method, device, and storage medium for monitoring helium-water flow in a high-temperature gas-cooled reactor - Google Patents

Abstract

According to the monitoring method, the monitoring device and the storage medium for the helium water flow of the high-temperature gas cooled reactor, the current helium flow, the water feeding flow and the nuclear power of each monitoring channel in a plurality of different monitoring channels are obtained, the current helium water flow ratio of each monitoring channel is calculated according to the helium flow and the water feeding flow of each monitoring channel, the nuclear power ratio corresponding to the current high-temperature gas cooled reactor is calculated according to the nuclear power of each monitoring channel, the helium water flow ratio limit value curve corresponding to the high-temperature gas cooled reactor is obtained, the limit value of the helium water flow ratio corresponding to the current nuclear power ratio is obtained according to the helium water flow ratio limit value curve, and each monitoring channel is monitored based on the limit value of the helium water flow ratio. Therefore, the method and the device do not need to rely on manual calculation, so that the calculation result is more accurate and visual. Meanwhile, the helium water flow rate of each monitoring channel is monitored based on the limit value of the helium water flow rate, so that the gas cooled reactor is observed in real time, and unnecessary shutdown loss of the high-temperature gas cooled reactor is avoided.

Description

A method, device, and storage medium for monitoring helium-water flow in a high-temperature gas-cooled reactor

technical field

The present application relates to the technical field of nuclear reactor engineering, in particular to a method, device and storage medium for monitoring the helium-water flow rate of a high-temperature gas-cooled reactor.

Background technique

The main coolant of the high temperature gas-cooled reactor is helium, and through the flow of helium, the heat generated by the nuclear fuel of the reactor core is taken out and sent to the primary side of the steam generator, and then the heat is transferred in the steam generator, and is sent to the secondary side of the steam generator. The water flowing in the side is taken away, and the flowing water is converted into steam in the steam generator, and sent to the steam turbine to do work, and the steam turbine drives the generator to rotate, thereby generating electric energy.

Among them, the above-mentioned high-temperature gas-cooled reactor energy transfer process depends on the flow of helium and water. Based on this, it is necessary to monitor whether the flow of helium and the flow of water match in real time. If the flow of helium does not match the flow of water, it will It affects the transfer of energy, which leads to the automatic shutdown of the gas-cooled reactor, and then destroys the gas-cooled reactor.

In related technologies, operation and maintenance personnel regularly observe the helium flow in the reactor and the feedwater flow in the steam generator, and calculate whether the helium flow and the feedwater flow match. However, regular observation by operation and maintenance personnel in related technologies cannot achieve real-time judgment results, and manual calculations may cause errors, making the calculation results inaccurate, resulting in unnecessary losses caused by the shutdown of the high-temperature gas-cooled reactor.

Contents of the invention

The present application provides a method, device and storage medium for monitoring the flow of helium water in a high-temperature gas-cooled reactor, so as to solve the technical problems in the above-mentioned related technologies.

The embodiment of the first aspect of the present application proposes a method for monitoring the helium water flow rate of a high temperature gas-cooled reactor, the helium water flow rate includes the helium gas flow rate and the feed water flow rate, and the method includes:

Obtain the current helium flow, feed water flow and nuclear power of each monitoring channel in multiple different monitoring channels;

Calculate the current helium-water flow ratio of each monitoring channel according to the helium flow and the feed water flow of each monitoring channel;

Calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel;

Obtain the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor;

The limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained according to the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is monitored based on the limit value of the helium-water flow ratio.

The embodiment of the second aspect of the present application proposes a monitoring device for the flow of helium water in a high temperature gas-cooled reactor, the flow of helium water includes the flow of helium gas and the flow of feed water, and the device includes:

The first acquisition module is used to acquire the current helium flow rate, feed water flow rate and nuclear power of each monitoring channel in a plurality of different monitoring channels;

The first calculation module is used to calculate the current helium-water flow ratio of each monitoring channel according to the helium flow rate and the feed water flow rate of each monitoring channel;

The second calculation module is used to calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel;

The second acquisition module is used to acquire the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor;

A monitoring module, configured to obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and adjust the helium-water flow rate of each monitoring channel based on the limit value of the helium-water flow ratio than monitor. The computer storage medium provided by the embodiment of the third aspect of the present application, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the first aspect above can be implemented.

The computer equipment proposed in the embodiment of the fourth aspect of the present application includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, it can realize the above-mentioned first aspect. described method.

The technical solutions provided by the embodiments of the present application bring at least the following beneficial effects:

In the monitoring method, device and storage medium of the high temperature gas-cooled reactor helium water flow rate proposed by the application, the current helium flow rate, feed water flow rate and nuclear power of each monitoring channel in a plurality of different monitoring channels are obtained, and according to the helium flow rate of each monitoring channel Flow and feed water flow, calculate the current helium-water flow ratio of each monitoring channel, calculate the current nuclear power ratio corresponding to the high-temperature gas-cooled reactor according to the nuclear power of each monitoring channel, and obtain the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor , obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and monitor each monitoring channel based on the limit value of the helium-water flow ratio. Therefore, the present application can calculate the helium-water flow ratio of each monitoring channel without relying on manual calculation, so that the calculation result is more accurate and intuitive. At the same time, the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained through the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is monitored based on the limit value of the helium-water flow ratio. Real-time observation of the cold reactor, so as to avoid unnecessary shutdown losses of the high-temperature gas-cooled reactor.

Additional aspects and advantages of the application 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 the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic flow chart of a method for monitoring the flow of helium water in a high temperature gas-cooled reactor according to an embodiment of the present application;

Fig. 2 is the schematic diagram that the monitoring method output of the high temperature gas-cooled reactor helium water flow rate provided according to one embodiment of the present application;

Fig. 3 is a schematic structural diagram of a monitoring device for helium-water flow in a high-temperature gas-cooled reactor according to an embodiment of the present application.

detailed description

Embodiments of the present application are described in detail below, examples of which are shown in the 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 by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

The method and device for monitoring the flow of helium water in a high temperature gas-cooled reactor according to the embodiments of the present application will be described below with reference to the accompanying drawings.

Embodiment one

Fig. 1 is a schematic flow chart of a method for monitoring the flow of helium water in a high temperature gas-cooled reactor according to an embodiment of the present application. As shown in Fig. 1 , it may include:

Step 101. Obtain the current helium flow rate, feed water flow rate and nuclear power of each monitoring channel in multiple different monitoring channels.

Wherein, in the embodiment of the present disclosure, the flow rate of helium water includes the flow rate of helium gas and the flow rate of feed water.

And, in the embodiment of the present disclosure, the above-mentioned multiple different monitoring channels may be 4 different monitoring channels, wherein each monitoring channel can monitor the current helium gas flow, feed water flow and corresponding nuclear power.

Step 102: Calculate the current helium-water flow ratio of each monitoring channel according to the helium flow rate and the feed water flow rate of each monitoring channel.

Wherein, in the embodiment of the present disclosure, the current helium-to-water flow ratio of each monitoring channel=helium flow/feedwater flow.

And, in the embodiment of the present disclosure, it is judged whether the current helium gas flow and the feed water flow match according to the helium-water flow ratio.

Step 103: Calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel.

Among them, in the embodiment of the present disclosure, the method for calculating the nuclear power ratio corresponding to the current high-temperature gas-cooled reactor may include: calculating the average nuclear power according to the nuclear power of each monitoring channel, and calculating the average nuclear power according to the average nuclear power and the rated value of the high-temperature gas-cooled reactor Power, calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor.

Specifically, in the embodiment of the present disclosure, when calculating the average nuclear power above, the nuclear power of multiple monitoring channels can be summed to obtain the total nuclear power, and then the total nuclear power can be divided by the number of monitoring channels to obtain the average nuclear power . For example, assuming that the high-temperature gas-cooled reactor has 4 monitoring channels, and the nuclear powers corresponding to the 4 monitoring channels are PA, _{P B} , PC, and _PD respectively, then the average nuclear power ₌ (PA + _{P B +} P _C +P _D )/4.

And, in the embodiment of the present disclosure, the above-mentioned nuclear power ratio is the ratio of the average nuclear power to the rated power of the high temperature gas-cooled reactor, and is expressed in the form of a percentage, for example, the nuclear power ratio is 50%.

Step 104, obtaining the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor.

Wherein, in the embodiment of the present disclosure, the helium-water flow ratio limit curve includes a helium-water flow ratio upper limit curve and a helium-water flow ratio lower limit curve.

And, in the embodiment of the present disclosure, the helium-water flow ratio upper limit curve is obtained according to the first formula, wherein the first formula is: y ₁ =k ₁ ⅹP+a, and k ₁ is the slope relationship of the reactor safety analysis , a is the theoretical deviation obtained from the reactor safety analysis, and P is the nuclear power ratio. Wherein, it can be obtained from the first formula that the abscissa of the helium-to-water flow ratio upper limit curve is the nuclear power ratio, and the ordinate is the upper limit of the helium-to-water flow ratio corresponding to the nuclear power ratio.

In the embodiment of the present disclosure, the lower limit curve of the helium-water flow ratio is obtained according to the second formula, wherein the second formula is: y ₂ =k ₂ ⅹP+b, k1 is the slope relationship of the reactor safety analysis, and a is the reactor Theoretical deviation obtained from safety analysis, P is the ratio of nuclear power. Wherein, it can be obtained from the second formula that the abscissa of the helium-to-water flow ratio upper limit curve is the nuclear power ratio, and the ordinate is the lower limit of the helium-to-water flow ratio corresponding to the nuclear power ratio.

Further, in the embodiment of the present disclosure, by substituting the current nuclear power ratio into the above-mentioned helium-water flow ratio upper limit curve and helium-water flow ratio lower limit curve, the helium-water flow ratio corresponding to the current nuclear power ratio can be obtained Upper limit value and lower limit value, so that the upper limit value and lower limit value can be used to judge whether the current helium-water flow ratio matches.

Step 105: Obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and monitor each monitoring channel based on the limit value of the helium-water flow ratio.

Among them, in the embodiment of the present disclosure, the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained according to the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is adjusted based on the limit value of the helium-water flow ratio. The method for monitoring flow ratio may include the following steps:

Step a: Obtain the upper limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the upper limit value curve of the helium-water flow ratio.

Step b. Obtain the lower limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the lower limit value curve of the helium-water flow ratio.

Step c, based on the upper limit value of the helium-water flow ratio and the lower limit value of the helium-water flow ratio, monitor the helium-water flow ratio of each monitoring channel at present. If the difference between the limit value/lower limit value exceeds the preset deviation value, an alarm will be issued.

Among them, in the embodiment of the present disclosure, if the difference between the helium-water flow ratio and the upper limit value/lower limit value of each monitoring channel among the multiple monitoring channels does not exceed the preset deviation value, it means that the helium-water flow rate of each monitoring channel If the ratio is normal, that is, the flow rate of helium water in each monitoring channel matches the flow rate of feed water, then no alarm is required.

And, in the embodiment of the present disclosure, if the difference between the helium-water flow ratio of the monitoring channel and the upper limit value/lower limit value exceeds the preset deviation value among the multiple monitoring channels, it means that the helium-water flow ratio of the monitoring channel has been exceeded. Very close to the upper limit/lower limit, that is, the helium water flow of the monitoring channel does not match the feed water flow, an alarm needs to be issued to attract the attention of the operation and maintenance personnel, so as to make timely adjustments to avoid automatic shutdown of the high temperature gas-cooled reactor .

Further, in the embodiment of the present disclosure, among multiple monitoring channels, when the number of monitoring channels whose difference between the helium-water flow ratio and the upper limit value/lower limit value exceeds the preset deviation value is different, the corresponding alarm The way is also different.

Specifically, in the embodiment of the present disclosure, it is assumed that the high-temperature gas-cooled reactor has 4 monitoring channels, and the difference between the helium-water flow ratio corresponding to only 1 monitoring channel and the upper limit value/lower limit value exceeds the preset deviation value , at this time, there may be an error in the measurement of a single monitoring channel, which can be checked, and the corresponding alarm method is an output alarm, or an email reminder; there are 2 or more monitoring channels corresponding to the helium-water flow ratio and the upper limit/down If the difference between the limit values exceeds the preset deviation value, it means that the gas-cooled reactor is in a dangerous state and there is a possibility of automatic shutdown, and the corresponding alarm method is to sound the whistle to attract the attention of the operation and maintenance personnel so that the flow rate can be monitored in time. Adjustment.

Based on the description of the monitoring method for the helium-water flow rate of the high-temperature gas-cooled reactor, the above-mentioned monitoring method can also display the helium-water flow ratio, the helium-water flow ratio upper limit curve and the helium-water flow ratio lower limit curve of each monitoring channel in real time , so that operation and maintenance personnel can monitor in real time.

Specifically, in the embodiment of the present disclosure, FIG. 2 is a schematic diagram of the output of the method for monitoring the flow of helium water in a high temperature gas-cooled reactor provided by the embodiment of the present disclosure. As shown in Figure 2, the output page will display the title, which is the label of the corresponding nuclear reactor. If the title is displayed as 1#NSSS, the data displayed on the page corresponds to the 1# nuclear reactor; if the title displays 2#NSSS, the page will display The data corresponds to the 2# nuclear reactor.

And, as shown in Figure 2, the real-time parameters displayed in the upper left corner of the page are helium gas flow, feed water flow, helium-water flow ratio, and nuclear power. Among them, the displayed helium flow, feed water flow, helium-water flow ratio, and nuclear power are the average values corresponding to all monitoring channels of the gas-cooled reactor. And, the color dots corresponding to each monitoring channel will also be displayed on the page, as shown in Figure 2, the four monitoring points A, B, C, and D are marked with red, orange, yellow, and green dots on the page. Channel, each dot corresponds to a monitoring channel.

Wherein, in the embodiment of the present disclosure, when there are 4 monitoring channels, the helium flow rate displayed in the upper left corner=(Q _A +Q _B +Q _C +Q _D )/4, where Q _A , Q _B , Q _C , Q _D is the real-time value of the helium water flow of the 4 monitoring channels respectively, that is, the displayed helium flow is the average value of the helium water flow of the 4 monitoring channels; the feed water flow = (q _A + q _B + q _C + q _D )/4, where q _A , q _B , q _C , and q _D are the real-time values of the feed water flow of the 4 monitoring channels respectively, that is, the displayed feed water flow is the average value of the feed water flow of the 4 monitoring channels; Flow ratio = helium flow/feed water flow, that is, the displayed value is the average helium-water flow ratio; nuclear power = (PA + P _B + P _C + P _{D )} /4, among them, PA, P _B , _{P C ,} P _D is the real-time value of the nuclear power of the 4 monitoring channels, that is, the displayed nuclear power is the average value of the nuclear power of the 4 monitoring channels, expressed as a percentage of the rated nuclear power.

And, in the embodiment of the present disclosure, as shown in Figure 2, the page will also display the helium-water flow ratio upper limit curve, the helium-water flow ratio lower limit curve, and the helium-water flow ratio ideal value curve, wherein the helium water The flow ratio upper limit curve and the helium-water flow ratio lower limit curve are represented by different color curves respectively, the helium-water flow ratio ideal value curve is represented by a dotted line, and the helium-water flow ratio ideal value curve is obtained according to the third formula, wherein, The third formula is: y=(y ₁ +y ₂ )/2. Based on this, the ideal value curve of the helium-water flow ratio is between the upper limit curve of the helium-water flow ratio and the lower limit curve of the helium-water flow ratio, which is the current helium-water flow ratio curve. Expected value of water flow ratio.

Furthermore, after the gas-cooled reactor starts running, the current nuclear power will be calculated and marked with a vertical line. At this time, the dots representing each monitoring channel are at the helium flow ratio corresponding to the current nuclear power. Based on this, the operation and maintenance personnel can Intuitively obtain the gap between the helium flow ratio of each monitoring channel and the upper limit/lower limit. If the helium-water flow ratio of the monitoring channel is found to be very close to the upper limit/lower limit, the flow is adjusted.

In summary, in the method for monitoring the helium-water flow rate of a high-temperature gas-cooled reactor proposed in this application, the current helium flow rate, feed water flow rate, and nuclear power of each monitoring channel in a plurality of different monitoring channels are obtained, and according to the helium flow rate of each monitoring channel Flow and feed water flow, calculate the current helium-water flow ratio of each monitoring channel, calculate the current nuclear power ratio corresponding to the high-temperature gas-cooled reactor according to the nuclear power of each monitoring channel, and obtain the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor , obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and monitor each monitoring channel based on the limit value of the helium-water flow ratio. Therefore, the present application can calculate the helium-water flow ratio of each monitoring channel without relying on manual calculation, so that the calculation result is more accurate and intuitive. At the same time, the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained through the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is monitored based on the limit value of the helium-water flow ratio. Real-time observation of the cold reactor, so as to avoid unnecessary shutdown losses of the high-temperature gas-cooled reactor.

Embodiment two

Fig. 3 is a structural schematic diagram of a monitoring device for a high-temperature gas-cooled reactor helium water flow according to an embodiment of the present application. The helium water flow includes a helium gas flow and a feed water flow. As shown in Fig. 3, the device may include:

The first obtaining module 301 is used to obtain the current helium flow, feed water flow and nuclear power of each monitoring channel in a plurality of different monitoring channels;

The first calculation module 302 is used to calculate the current helium-water flow ratio of each monitoring channel according to the helium flow rate and feed water flow rate of each monitoring channel;

The second calculation module 303 is used to calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel;

The second acquisition module 304 is used to acquire the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor;

The monitoring module 305 is configured to obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and monitor each monitoring channel based on the limit value of the helium-water flow ratio.

In summary, in the monitoring device for the helium-water flow rate of the high-temperature gas-cooled reactor proposed in this application, the current helium flow rate, feed water flow rate, and nuclear power of each monitoring channel in a plurality of different monitoring channels are obtained, and according to the helium flow rate of each monitoring channel Flow and feed water flow, calculate the current helium-water flow ratio of each monitoring channel, calculate the current nuclear power ratio corresponding to the high-temperature gas-cooled reactor according to the nuclear power of each monitoring channel, and obtain the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor , obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and monitor each monitoring channel based on the limit value of the helium-water flow ratio. Therefore, the present application can calculate the helium-water flow ratio of each monitoring channel without relying on manual calculation, so that the calculation result is more accurate and intuitive. At the same time, the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained through the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is monitored based on the limit value of the helium-water flow ratio. Real-time observation of the cold reactor, so as to avoid unnecessary shutdown losses of the high-temperature gas-cooled reactor.

In order to realize the above-mentioned embodiments, the present disclosure also proposes a computer storage medium.

The computer storage medium provided by the embodiments of the present disclosure stores an executable program; after the executable program is executed by a processor, the method shown in FIG. 1 can be implemented.

In order to realize the above-mentioned embodiments, the present disclosure also proposes a computer device.

The computer equipment provided by the embodiments of the present disclosure includes a memory, a processor, and a computer program stored on the memory and operable on the processor; when the processor executes the program, it can realize any of the processes shown in Figure 1. method.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing a custom logical function or step of a process , and the scope of preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in substantially simultaneous fashion or in reverse order depending on the functions involved, which shall It should be understood by those skilled in the art to which the embodiments of the present application belong.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. a monitoring method of high-temperature gas-cooled reactor helium-water flow, is characterized in that, described helium-water flow comprises helium flow and feedwater flow, and described method comprises: Obtain the current helium flow, feed water flow and nuclear power of each monitoring channel in multiple different monitoring channels; Calculate the current helium-water flow ratio of each monitoring channel according to the helium flow and the feed water flow of each monitoring channel; Calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel; Obtain the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor; The limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained according to the limit value curve of the helium-water flow ratio, and the helium-water flow ratio of each monitoring channel is monitored based on the limit value of the helium-water flow ratio. 2. The method according to claim 1, wherein the calculation of the current helium-water flow ratio of each monitoring channel according to the helium flow and the feed water flow of each monitoring channel includes: The current helium-water flow ratio of the monitoring channel = helium flow/feedwater flow. 3. The method according to claim 1, wherein the calculation of the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel includes: Calculate the average nuclear power according to the nuclear power of each monitoring channel; Calculate the current corresponding nuclear power ratio according to the average nuclear power and the rated power of the high temperature gas-cooled reactor. 4. The method according to claim 1, wherein the helium-water flow ratio limit curve comprises a helium-water flow ratio upper limit curve and a helium-water flow ratio lower limit curve. 5. The method according to claim 4, wherein the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio is obtained according to the helium-water flow ratio limit curve, based on the helium-water flow ratio The limit value monitors the helium-water flow ratio of each monitoring channel, including: Obtain the upper limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the upper limit value curve of the helium-water flow ratio; Obtain the lower limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the lower limit value curve of the helium-water flow ratio; Based on the upper limit value of the helium-water flow ratio and the lower limit value of the helium-water flow ratio, the current helium-water flow ratio of each monitoring channel is monitored, if there is a helium-water flow rate of the monitoring channel in the plurality of monitoring channels If the difference between the ratio and the upper limit/lower limit exceeds the preset deviation value, an alarm will be issued. 6. A monitoring device for a high-temperature gas-cooled reactor helium-water flow, characterized in that, the helium-water flow includes a helium flow and a feedwater flow, and the device includes: The first acquisition module is used to acquire the current helium flow rate, feed water flow rate and nuclear power of each monitoring channel in a plurality of different monitoring channels; The first calculation module is used to calculate the current helium-water flow ratio of each monitoring channel according to the helium flow rate and feed water flow rate of each monitoring channel; The second calculation module is used to calculate the nuclear power ratio corresponding to the current high temperature gas-cooled reactor according to the nuclear power of each monitoring channel; The second acquisition module is used to acquire the helium-water flow ratio limit curve corresponding to the high-temperature gas-cooled reactor; The monitoring module is used to obtain the limit value of the helium-water flow ratio corresponding to the current nuclear power ratio according to the limit value curve of the helium-water flow ratio, and adjust the helium-water flow rate of each monitoring channel based on the limit value of the helium-water flow ratio. than monitor. 7. The device according to claim 6, wherein the first calculation module is specifically used for: The current helium-water flow ratio of the monitoring channel = helium flow/feedwater flow. 8. The device according to claim 6, wherein the second calculation module is specifically used for: Calculate the average nuclear power according to the nuclear power of each monitoring channel; Calculate the current corresponding nuclear power ratio according to the average nuclear power and the rated power of the high temperature gas-cooled reactor. 9. A computer device, characterized in that it comprises a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, it can realize the requirements of claims 1-5. any of the methods described. 10. A computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method according to any one of claims 1-5 can be implemented.

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