CN114758799A - Method and device for achieving criticality under helium atmosphere of high-temperature gas cooled reactor - Google Patents

Abstract

The invention relates to the physical field of high-temperature gas cooled reactor reactors, and provides a method and a device for achieving criticality under a helium atmosphere of a high-temperature gas cooled reactor, wherein the method comprises the following steps: initializing a high-temperature gas cooled reactor; horizontally lifting the adjusting rod and the compensating rod to a preset rod position, and recording the current source range counting rate; horizontally lifting the adjusting rod and the compensating rod by a first preset height, and recording the current source range counting rate; calculating an extrapolation critical rod position according to the counting rates of the source measuring ranges of the previous two times, and determining a target rod lifting height based on the extrapolation critical rod position, the current second rod position and a second preset height; horizontally lifting the target rod lifting height to a target rod position by the adjusting rod and the compensating rod, and recording a new second rod position and a new second source range counting rate after the source range counting rate is stable; and repeating the steps of calculating the extrapolated critical rod position and recording the new second source range counting rate until a preset condition is met, and transitioning the high-temperature gas cooled reactor to a critical or supercritical state. The present disclosure enables a high temperature gas cooled reactor to safely and efficiently reach a critical or supercritical state under a helium atmosphere.

Description

Method and device for reaching criticality in high temperature gas-cooled reactor helium atmosphere

technical field

The present disclosure relates to the technical field of high-temperature gas-cooled reactor physics, and in particular, to a method and a device for reducing the criticality of a high-temperature gas-cooled reactor helium atmosphere.

Background technique

In the prior art, the core loading and reactivity control means of the pebble bed type high temperature gas-cooled reactor are quite different from the core loading and reactivity control means of the pressurized water reactor. A set of reactive control system, namely control rod system, is usually set in the graphite side reflective layer near the active zone of high temperature gas-cooled reactor, and at the same time, another set of reactive control system with different working principles and independent existence is also set, namely absorption sphere Shutdown system.

The control rod system is the main reactive control system, including safety rods, compensation rods, and adjustment rods, and has the following functions: 1) Reactive adjustment of operating conditions such as reactor startup, lifting power, and normal power operation adjustment ; 2) For emergency shutdown; 3) Only the control rod system is used to enable the reactor to reach and maintain a normal shutdown state.

The absorption ball shutdown system is an auxiliary shutdown system, which is used together with the control rod system to keep the reactor shutdown margin meeting the requirements during cold shutdown and maintenance shutdown.

Therefore, there is also a certain difference between the way that the high temperature gas-cooled reactor reaches the criticality and the way that the PWR reaches the criticality. However, the prior art lacks a method of how to make the reactor achieve criticality under the helium atmosphere by changing the state of the reactivity control system of the high temperature gas-cooled reactor.

SUMMARY OF THE INVENTION

The present disclosure aims to solve at least one of the problems existing in the prior art, and provides a method and a device for reducing the criticality of the helium atmosphere of a high temperature gas-cooled reactor.

In one aspect of the present disclosure, there is provided a method for criticalizing a high temperature gas-cooled reactor helium atmosphere, comprising the following steps:

S110. Initialize the high-temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height, all the absorption balls are located in the spherical storage tank on the upper part of the core, and all the safety rods are located at the preset upper limit. All adjustment rods and compensation rods are located at the preset lower limit;

S120, lift all adjustment rods and all compensation rods to the preset rod position, and record the current first rod position and the first source range count rate after the source range count rate is stable;

S130, lift all adjustment rods and all compensation rods to a first preset height, and after the source range count rate is stable, record the current second rod position and the second source range count rate;

S140. Calculate the extrapolated critical rod position according to the previous two count rates of the source range, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position and the second preset height;

S150, lift all adjustment rods and all compensation rods to the target rod height to the target rod position, and after the source range count rate is stable, record the new second rod position and the new second source range count rate;

S160. Steps S140 and S150 are repeated until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state.

Optionally, calculate the extrapolated critical bar position based on the first two count rates of the source range, including:

Calculate the extrapolated critical bar position according to the count rate of the previous two source ranges and the count rate of the He-3 counter.

Optionally, based on the extrapolated critical rod position, the current second rod position and the second preset height, the target rod lift height is determined, including:

Based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height, the target rod lift height is determined.

Optionally, based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height, determine the target rod lift height, including:

The minimum value between one third of the difference and the second preset height is determined as the target lifting height.

Optionally, transition the high temperature gas-cooled reactor to a critical or supercritical state, including:

Raise the adjusting rod and the compensating rod to the third preset height one by one. During the lifting process, if the increase of the neutron count rate tends to be stable or the high temperature gas-cooled reactor has a stable multiplication period, the rod lifting is stopped;

When the count rate of the source range reaches the preset critical value, the position of the control rod is adjusted to make the count rate tend to be stable, and the high temperature gas-cooled reactor reaches the critical state.

Optionally, after the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state, the method further includes the following steps:

Insert a regulating rod or compensating rod to make the high temperature gas-cooled reactor reach the subcritical state.

Optionally, the preset rod position is a position where no positive reactivity is introduced into the core or the positive reactivity is less than a preset threshold.

In another aspect of the present disclosure, there is provided a device for depressing the helium atmosphere of a high temperature gas-cooled reactor, comprising:

The initialization module is used to initialize the high temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height. Upper limit, all adjustment rods and compensation rods are located at the preset lower limit;

The first leveling module is used to level all adjustment rods and all compensation rods to the preset rod position, and after the source range count rate is stable, record the current first rod position and the first source range count rate;

The second elevating module is used to elevate all adjustment rods and all compensation rods to a first preset height, and after the source range count rate is stable, record the current second rod position and the second source range count rate;

A determination module for calculating the extrapolated critical rod position according to the previous two count rates of the source range, and determining the target rod lift height based on the extrapolated critical rod position, the current second rod position and the second preset height;

The third leveling module is used to level all adjustment rods and all compensation rods to the target rod height value and target rod position. After the source range count rate is stable, record the new second rod position and the new second source range count Rate;

The transition module is used to repeatedly trigger the determination module and the third leveling module until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state .

Another aspect of the present disclosure provides an electronic device, comprising:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the above-described method for criticalizing a high temperature gas-cooled reactor helium atmosphere.

Another aspect of the present disclosure provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above-described method for reducing a helium atmosphere of a high-temperature gas-cooled reactor to criticality is provided.

Compared with the prior art, the present disclosure firstly initializes the high temperature gas-cooled reactor, then lifts all adjustment rods and all compensation rods to the preset rod position, and records the current first rod position and the first rod position after the source range count rate is stable. First source range count rate, then lift all adjustment rods and all compensation rods to the first preset height, after the source range count rate is stable, record the current second rod position and the second source range count rate, according to the previous two sources Range count rate, calculate the extrapolated critical rod position, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position, and the second preset height, and lift all adjustment rods and all compensation rods horizontally to the target rod lift The height reaches the target rod position. After the source range count rate is stable, record the new second rod position and the new second source range count rate. Repeat the above calculation and extrapolate the critical rod position according to the previous two source range count rates to record the new one. The second rod position and the count rate of the new second source range, until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state Therefore, the high temperature gas-cooled reactor can safely and efficiently reach the critical state or supercritical state in the helium atmosphere, and on this basis, follow-up low-power tests or increase the power of the reactor are carried out.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are denoted as similar elements, Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

FIG. 1 is a flow chart of a method for a high temperature gas-cooled reactor helium atmosphere to reach criticality according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a device for reaching a criticality in a high temperature gas-cooled reactor helium atmosphere according to another embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an electronic device according to another embodiment of the present disclosure.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will appreciate that, in the various embodiments of the present disclosure, numerous technical details are set forth in order to provide the reader with a better understanding of the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be realized. The following divisions of the various embodiments are for the convenience of description, and should not constitute any limitation to the specific implementation of the present disclosure, and the various embodiments may be combined with each other and referred to each other on the premise of not contradicting each other.

One embodiment of the present disclosure relates to a method for a high temperature gas-cooled reactor helium atmosphere to reach a criticality, the process of which is shown in FIG. 1 and includes the following steps:

S110. Initialize the high-temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height, all the absorption balls are located in the spherical storage tank on the upper part of the core, and all the safety rods are located at the preset upper limit. All adjustment rods and compensation rods are at the preset lower limit.

Specifically, in this step, a 6.05m graphite ball cushion can be installed at the bottom of the core, and the high-dimensional gas-cooled reactor reaches the initial fully loaded core height.

The core temperature needs to ensure that when all the absorbing balls are located in the spherical storage tank in the upper part of the core and all the safety rods can be raised to the preset upper limit, the high temperature gas-cooled reactor has a certain degree of subcriticality. For example, the average temperature of the reactor can be set to be higher than 150℃ to ensure that all the absorption balls are located in the spherical storage tank in the upper part of the core, and all the safety rods can be raised to the preset upper limit, the high temperature gas-cooled reactor has a certain subcriticality.

S120, lift all adjustment rods and all compensation rods to a preset rod position, and record the current first rod position and the first source range count rate after the source range count rate is stable.

Specifically, in this step, all adjusting rods and all compensating rods can be lifted to a preset rod position at one time according to the core loading and the theoretical value curve of the control rods. When He-3 counters are present, He-3 counters can also be recorded after the source range count rate stabilizes.

Exemplarily, the preset rod position may be a position where no positive reactivity is introduced into the core or a position where the positive reactivity is less than a preset threshold, for example, the preset rod position may be a 6000 mm rod position.

By setting the preset rod position to not introduce positive reactivity into the core or to introduce a position where the positive reactivity is less than the preset threshold value, the efficiency caused by lifting rods multiple times in the worthless area when there is a graphite ball cushion at the bottom of the core can be avoided reduce problems.

S130. Raise all adjustment rods and all compensation rods to a first preset height, and record the current second rod position and the second source range count rate after the source range count rate is stable.

For example, the first preset height may be 200mm. When there is a He-3 counter, this step can also record the count of the He-3 counter after the source range count rate is stable.

S140. Calculate the extrapolated critical rod position according to the previous two count rates of the source range, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position and the second preset height.

Specifically, in this step, the extrapolated critical bar position can be calculated according to the previous two source range count rates, that is, the count rates of the two channels of the source range, including the first source range count rate and the second source range count rate. For example, the extrapolated critical bar position can be calculated based on the first two source range count rates using the similar triangle method.

Exemplarily, when there is a He-3 counter, calculating the extrapolated critical bar position according to the previous two count rates of the source range, which may further include: according to the previous two count rates of the source range and the count rate of the He-3 counter , calculate the extrapolated critical bar position. That is to say, when there is a He-3 counter tube, this step can also calculate the extrapolated critical bar position according to the previous two count rates of the source range and the count rate of the He-3 counter tube.

It should be noted that this step does not limit the specific method of calculating the extrapolated critical rod position based on the previous two source range count rates, as long as the extrapolated critical rod position can be calculated based on the previous two source range count rates, or when there is He In the case of -3 counter tubes, the extrapolated critical bar position can be calculated according to the count rate of the previous two source ranges and the count rate of the He-3 counter tube.

Exemplarily, based on the extrapolated critical rod position, the current second rod position and the second preset height, determining the target rod lift height includes:

Based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height, the target rod lift height is determined.

Specifically, in this step, a part of the difference between the extrapolated critical rod position and the current second rod position may be compared with the second preset height, and the minimum value of the two may be used as the target rod lift height. The second preset height may be 200mm.

Preferably, determining the target rod lift height based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height, including: taking one third of the difference and the smallest of the second preset heights value, which is determined as the target lift height. That is to say, in this step, one third of the difference between the extrapolated critical rod position and the current second rod position and the minimum value of the second preset height can be used as the target rod lifting height, so that the rod lifting can be carried out according to the target rod lifting height. The height determines the target rod position of the next lifting rod.

By determining the minimum value between one third of the difference and the second preset height as the target rod lifting height, the unsafe factor caused by excessive reactivity when the rod is pushed outside the nonlinear region can be avoided. In addition, the problem of time-consuming increase caused by excessive extrapolation times can be avoided.

S150. Raise all adjustment rods and all compensation rods horizontally to the target rod height to the target rod position, and after the source range count rate is stable, record the new second rod position and the new second source range count rate.

Specifically, when there is a He-3 counter, this step can also record a new He-3 counter after the source range count rate is stable.

S160. Steps S140 and S150 are repeated until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state.

Specifically, the extrapolated critical rod position here can be calculated according to the previous two count rates of the source range, or it can be calculated based on the previous two count rates of the source range and the count rate of the He-3 counter tube. The method is not limited to this. The preset critical difference can be 50mm, that is, when the difference between the extrapolated critical rod position and the current average rod position is less than 50mm, the high temperature gas-cooled reactor will be transitioned to a critical state or a supercritical state, and when the extrapolated critical rod position and the current average rod position are less than 50mm. When the difference between the current average rod positions is not less than 50mm, steps S140 and S150 are repeated until the difference between the obtained new extrapolated critical rod position and the new current average rod position is less than 50mm.

Compared with the prior art, the embodiment of the present disclosure first initializes the high temperature gas-cooled reactor, then lifts all adjustment rods and all compensation rods to the preset rod position, and records the current first rod position after the source range count rate is stable and the first source range count rate, then lift all adjustment rods and all compensation rods to the first preset height, after the source range count rate is stable, record the current second rod position and the second source range count rate, according to the first two Secondary source range count rate, calculate the extrapolated critical rod position, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position, and the second preset height, and lift all adjustment rods and all compensation rods to the target horizontally Raise the rod height to the target rod position. After the source range count rate is stable, record the new second rod position and the new second source range count rate. Repeat the above calculation based on the previous two source range count rates to extrapolate the critical rod position to The steps of recording the new second rod position and the count rate of the new second source range, until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to the critical state or Supercritical state, so that the high-temperature gas-cooled reactor can safely and efficiently reach the critical state or supercritical state in the helium atmosphere.

Exemplarily, transitioning a high temperature gas-cooled reactor to a critical state or a supercritical state includes:

Raise the adjusting rod and the compensating rod to the third preset height one by one. During the lifting process, if the increase of the neutron count rate tends to be stable or the high temperature gas-cooled reactor has a stable multiplication period, the rod lifting is stopped;

When the count rate of the source range reaches the preset critical value, the position of the control rod is adjusted to make the count rate tend to be stable, and the high temperature gas-cooled reactor reaches the critical state.

Specifically, the third preset height may be 100 mm, that is, when the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state, the adjustment rods and the compensation rods may be lifted one by one by 100 mm.

When the high-temperature gas-cooled reactor is transitioned to a critical state or a supercritical state, by raising the regulating rods and compensating rods to a third preset height one by one, it can avoid the high-temperature gas-cooled reactor still remaining after all the regulating rods and compensating rods are lifted. A situation where a critical or supercritical state cannot be reached occurs.

For example, the preset critical value may be 1000cps, that is, when the source range count rate reaches 1000cps, the position of the control rod is adjusted to stabilize the count rate, and the high temperature gas-cooled reactor reaches the critical state.

Exemplarily, after the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state, the method further includes the following steps: inserting a regulating rod or a compensation rod to make the high temperature gas-cooled reactor reach a subcritical state. In this step, the average temperature of the reactor when the high temperature gas-cooled reactor reaches the subcritical state can also be recorded.

Exemplarily, after the high temperature gas-cooled reactor reaches the subcritical state, another adjusting rod or compensation rod may be inserted to make the high temperature gas-cooled reactor be in a deeper subcritical state.

In order to enable those skilled in the art to better understand the above-mentioned embodiments, a specific example is used for description below.

A method for delivering a critical helium atmosphere of a high temperature gas-cooled reactor, comprising the following steps:

(1) Initialization of high temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, which reaches the initial fully loaded core height and is equipped with a 6.05m graphite ball cushion at the bottom of the core. The average temperature of the reactor is higher than 140 ℃ and lower than 150 ℃ ℃, all absorbing balls are located in the upper storage tank of the core, all safety rods are located at the preset upper limit, and all adjustment rods and compensation rods are located at the preset lower limit.

(2) Lift all adjustment rods and all compensation rods to the preset rod position, that is, the 6000mm rod position. After the source range count rate is stable, record the current first rod position, the first source range count rate and He-3 count Tube count.

(3) Raise all adjustment rods and all compensation rods to the first preset height, namely 200mm. After the source range count rate is stable, record the current second rod position, the second source range count rate and the He-3 counter tube count.

(4) Calculate the extrapolated critical rod position according to the count rate of the previous two source ranges and the count rate of the He-3 counter tube, and calculate the difference between the extrapolated critical rod position and the current second rod position and the third 2. The preset height, that is, the minimum value of 200mm, is determined as the target lift height.

(5) Raise all adjustment rods and all compensation rods to the target rod height to the target rod position. After the source range count rate is stable, record the new second rod position, the new second source range count rate and the new He -3 counter tube counts.

(6) Repeat steps (4) to (5) until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, that is, 50 mm, and transition the high temperature gas-cooled reactor to a critical state or a supercritical state .

(7) Raise the adjusting rod and the compensating rod one by one to the third preset height, namely 100mm. During the lifting process, if the increase of the neutron count rate tends to be stable or the high temperature gas-cooled reactor has a stable multiplication period, the lifting is stopped. Great.

It should be noted that it is allowed to manually block the source range nuclear power high shutdown signal after the occurrence of the nuclear power high protection shutdown signal, and then read the reactor nuclear power through the middle range; if there is a He-3 counter tube, then When the counting rate of the He-3 counter tube is close to the upper limit of the range, turn off the power of this channel.

(8) When the count rate of the source range reaches the preset critical value, that is, 1000 cps, adjust the position of the control rod to make the count rate tend to be stable, and the high temperature gas-cooled reactor reaches the critical state. After that, insert a regulating rod or compensating rod to make the high temperature gas-cooled reactor reach the subcritical state, and record the average temperature of the reactor. After that, insert another adjusting rod or compensating rod to make the high temperature gas-cooled reactor in a deeper subcritical state.

Another embodiment of the present disclosure relates to a device for criticalizing a high temperature gas-cooled reactor helium atmosphere, as shown in FIG. 2 , including:

The initialization module 201 is used to initialize the high temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height, all the absorption balls are located in the upper storage tank of the core, and all the safety rods are located in the preset The upper limit of , all adjustment rods and compensation rods are located at the preset lower limit;

The first leveling module 202 is used for leveling all adjustment rods and all compensation rods to a preset rod position, and after the source range count rate is stable, records the current first rod position and the first source range count rate;

The second elevating module 203 is used to elevate all adjustment rods and all compensation rods to a first preset height, and after the source range count rate is stable, record the current second rod position and the second source range count rate;

A determination module 204, configured to calculate the extrapolated critical rod position according to the previous two count rates of the source range, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position and the second preset height;

The third elevating module 205 is used to elevate all adjustment rods and all compensation rods to the target rod height to the target rod position, and record the new second rod position and the new second source range after the source range count rate is stable count rate;

The transition module 206 is used to repeatedly trigger the determination module 204 and the third leveling module 205 until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or supercritical state.

For the specific implementation method of the device for reaching the criticality of the high temperature gas-cooled reactor helium atmosphere provided by the embodiment of the present disclosure, reference may be made to the description of the method for the criticality of the helium atmosphere of the high temperature gas-cooled reactor provided by the embodiment of the present disclosure, which will not be repeated here.

Compared with the prior art, the embodiment of the present disclosure firstly initializes the high temperature gas-cooled reactor through the initialization module, and then lifts all the adjustment rods and all the compensation rods to the preset rod position through the first lifting module, and the counting rate at the source range is After stabilization, record the current first rod position and the first source range count rate, then lift all adjustment rods and all compensation rods to the first preset height through the second lift module, and record the current count rate after the source range count rate is stable. The second rod position and the second source range count rate are determined by the module to calculate the extrapolated critical rod position according to the previous two source range count rates, and based on the extrapolated critical rod position, the current second rod position and the second preset height , determine the height of the target lifter, lift all adjustment bars and all compensation bars to the target lifter height through the third lift module, and record the new second bar position and the new one after the source range count rate is stable The count rate of the second source range is repeatedly triggered by the transition module to determine the module and the third lift module until the difference between the extrapolated critical rod position and the current average rod position is less than the preset critical difference, and the high temperature gas-cooled reactor is transitioned to the critical state or supercritical state, so that the high temperature gas-cooled reactor can safely and efficiently reach the critical state or supercritical state in the helium atmosphere, and on this basis, follow-up low-power tests or increase the power of the reactor are carried out.

Another embodiment of the present disclosure relates to an electronic device, as shown in FIG. 3 , including:

at least one processor 301; and,

a memory 302 in communication with the at least one processor 301; wherein,

The memory 302 stores instructions that can be executed by the at least one processor 301, and the instructions are executed by the at least one processor 301, so that the at least one processor 301 can execute the method for the criticality of a high temperature gas-cooled reactor helium atmosphere described in the above-mentioned embodiments .

The memory and the processor are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors and various circuits of the memory. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor.

The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, memory may be used to store data used by the processor in performing operations.

Another embodiment of the present disclosure relates to a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the method for de-criticalizing a high temperature gas-cooled reactor helium atmosphere described in the foregoing embodiment is realized.

That is, those skilled in the art can understand that all or part of the steps in the methods described in the above embodiments can be implemented by instructing relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a A device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) executes all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present disclosure, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present disclosure. scope.

Claims (10)

1. a critical method for a high temperature gas-cooled reactor helium atmosphere, characterized in that the method comprises the following steps: S110. Initialize the high-temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height, all the absorption balls are located in the spherical storage tank on the upper part of the core, and all the safety rods are located at the preset upper limit. All adjustment rods and compensation rods are located at the preset lower limit; S120, lift all the adjustment rods and all the compensation rods to a preset rod position, and record the current first rod position and the first source range count rate after the source range count rate is stable; S130, lift all the adjustment rods and all the compensation rods to a first preset height, and after the source range count rate is stable, record the current second rod position and the second source range count rate; S140. Calculate the extrapolated critical rod position according to the previous two count rates of the source range, and determine the target rod lift height based on the extrapolated critical rod position, the current second rod position and the second preset height; S150. Raise all the adjustment rods and all the compensation rods to the target rod height to the target rod position, and after the source range count rate is stable, record the new second rod position and the new second source range count Rate; S160. Steps S140 and S150 are repeated until the difference between the extrapolated critical rod position and the current average rod position is less than a preset critical difference, and the high temperature gas-cooled reactor is transitioned to a critical state or a supercritical state. 2. The method according to claim 1, wherein calculating the extrapolated critical bar position according to the first two count rates of the source range, comprising: The extrapolated critical bar position is calculated according to the first two count rates of the source range and the count rate of the He-3 counter tube. 3. The method according to claim 1, wherein determining the target rod lifting height based on the extrapolated critical rod position, the current second rod position and the second preset height, comprising: The target rod lift height is determined based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height. 4 . The method according to claim 3 , wherein the target lift is determined based on the difference between the extrapolated critical rod position and the current second rod position and the second preset height. 5 . Rod height, including: A minimum value between one third of the difference and the second preset height is determined as the target lift height. 5. The method according to any one of claims 1 to 4, wherein the transition of the high temperature gas-cooled reactor to a critical state or a supercritical state comprises: The regulating rod and the compensating rod are lifted one by one to a third preset height. During the lifting process, if the increase of the neutron count rate tends to be stable or the high temperature gas-cooled reactor has a stable multiplication period, stop lift the stick; When the count rate of the source range reaches a preset critical value, the position of the control rod is adjusted to make the count rate tend to be stable, and the high temperature gas-cooled reactor reaches the critical state. 6. The method according to any one of claims 1 to 4, wherein after the transition of the high temperature gas-cooled reactor to a critical state or a supercritical state, the method further comprises the following steps: Insert one of the adjustment rods or the compensation rods to make the high temperature gas-cooled stack reach a subcritical state. 7. The method according to any one of claims 1 to 4, wherein the preset rod position is a position where no positive reactivity is introduced into the core or the positive reactivity is less than a preset threshold. 8. A device for delivering criticality in a high temperature gas-cooled reactor helium atmosphere, wherein the device comprises: The initialization module is used to initialize the high temperature gas-cooled reactor: the high-temperature gas-cooled reactor is in a helium atmosphere, and it reaches the initial full-loaded core height. Upper limit, all adjustment rods and compensation rods are located at the preset lower limit; The first leveling module is used for leveling all the adjusting rods and all the compensating rods to the preset rod position, and after the source range count rate is stable, records the current first rod position and the first source range count rate; The second leveling module is used to lift all the adjustment rods and all the compensation rods to a first preset height, and after the source range count rate is stable, record the current second rod position and the second source range count rate; A determination module, configured to calculate the extrapolated critical rod position according to the previous two count rates of the source range, and determine the target lift height based on the extrapolated critical rod position, the current second rod position and the second preset height ; The third leveling module is used for leveling all the adjusting rods and all the compensation rods to the target lifting rod height to the target rod position, and after the source range count rate is stable, record the new second rod position and the new The second source range count rate of ; The transition module is used to repeatedly trigger the determination module and the third lift module until the difference between the extrapolated critical rod position and the current average rod position is less than a preset critical difference, and the high temperature gas-cooled reactor Transition to a critical or supercritical state. 9. An electronic device, characterized in that, comprising: at least one processor; and, a memory communicatively coupled to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the execution of any one of claims 1 to 7 A method for the criticality of the high temperature gas-cooled reactor helium atmosphere. 10. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the high-temperature gas-cooled reactor helium atmosphere of any one of claims 1 to 7 can be released to a critical level. Methods.

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