A method for counting the number of fuel elements loaded in a pebble bed type high-temperature gas-cooled reactor

Abstract

The present invention discloses a method for counting the number of fuel element loadings for a pebble bed type high temperature gas-cooled reactor, comprising the following steps: determining the number of loadings; after loading is completed using a loading counting device, sending the loading counting device into a loading box, and pouring the fuel elements into the loading box so that the fuel elements enter the loading tube; a camera device counts the loading amount and monitors the loading process throughout the process; a loading counting device counts the fuel elements passing through the loading tube; a loading controller compares and analyzes the photographed loading amount and the counted loading amount, if the two quantities are consistent, the loading is completed, if the two quantities are inconsistent, the loading amount is checked using a camera device. The present invention effectively controls the loading process of the fuel elements through a loading counting device, a camera device, and a loading counting device, realizes accurate statistics of the loading amount while reducing the workload of the loading personnel counting the loading amount, and ensures that the nuclear material control work in the loading process meets the regulatory requirements.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear material control, and in particular to a method for counting the number of fuel element loadings in a pebble bed high temperature gas-cooled reactor. Background Art

[0002] The pebble bed high temperature gas-cooled reactor is an advanced nuclear reactor with good inherent safety that can be used for efficient power generation and high temperature heating. It is one of the preferred reactor types in the fourth generation nuclear energy system in the international nuclear energy field and has broad development prospects. The pebble bed high temperature gas-cooled reactor uses spherical fuel elements, whose structure and size are quite different from those of traditional pressurized water reactor fuel assemblies. Spherical fuel elements are fuel balls with a diameter of 6 cm and a small volume. In addition, the number of spherical fuel elements is large. Taking the high temperature gas-cooled reactor nuclear power plant demonstration project as an example, nearly 300,000 fuel elements are required each year. Spherical fuel elements are nuclear materials. Nuclear power plants must ensure the accuracy of their inventory quantity in order to implement nuclear material control on them.

[0003] At present, manual operation is required when loading the pebble bed high temperature gas-cooled reactor. On the one hand, the loading quantity is counted, and on the other hand, the appearance quality of the fuel elements must be checked one by one. The workload is very large and it is very easy to make mistakes in the quantity. There are risks of misloading, underloading, overloading, and loss, which brings great difficulties to the counting of the loading quantity of the pebble bed high temperature gas-cooled reactor fuel elements. Therefore, it is necessary to propose a method for counting the loading quantity of the pebble bed high temperature gas-cooled reactor fuel elements to accurately and quickly count the loading quantity of the pebble bed high temperature gas-cooled reactor fuel elements. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a method for counting the number of fuel element loadings for a pebble bed high temperature gas-cooled reactor.

[0006] The present invention proposes a method for counting the number of fuel element loadings of a pebble bed high temperature gas-cooled reactor, comprising the following steps:

[0007] Determine the loading quantity;

[0008] After the loading is completed using the loading counting device, the loading counting device is sent into the loading box, and the fuel elements are poured into the loading box so that the fuel elements enter the loading pipe;

[0009] The camera device counts the loading amount and monitors the entire loading process, and transmits the camera loading amount data to the loading controller;

[0010] A loading counting device counts the fuel elements passing through the loading pipe and transmits counted loading amount data to the loading controller;

[0011] The charging controller compares and analyzes the photographed charging amount and the counted charging amount. If the two amounts are consistent, the charging is completed. If the two amounts are inconsistent, the charging amount is checked using the camera device.

[0012] In some embodiments, the camera device and the charging counting device are both electrically connected to the charging controller.

[0013] In some embodiments, the charging controller includes a data receiving unit and a data processing unit, the data receiving unit is used to receive data from the camera device and the charging counting device, and the data processing unit is used to process and analyze the data received by the data receiving unit.

[0014] In some embodiments, the camera device includes a video recording component and a quantity counting component. The video recording component records the entire loading process, and the quantity counting component is used to count the number of fuel elements in the loading process.

[0015] In some embodiments, the camera device is disposed above the loading platform.

[0016] In some embodiments, the loading platform is disposed adjacent to the loading box.

[0017] In some embodiments, the bottom of the loading box is connected to the loading tube, and the fuel elements are arranged in a single row in the loading tube.

[0018] In some embodiments, the charging counting device is arranged on the charging tube.

[0019] In some embodiments, a plurality of the charging counting devices are provided on the charging tube.

[0020] In some embodiments, the charge counting device accommodates a certain number of fuel elements.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The present invention effectively controls the loading process of the fuel elements through a loading counting device, a camera device and a loading counting device, thereby reducing the workload of the loading personnel in counting the loading quantity and achieving accurate statistics of the loading quantity, thereby ensuring that the nuclear material control work in the loading process meets the regulatory requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 This is a schematic diagram of the process flow for counting the number of fuel elements loaded in a pebble bed high temperature gas-cooled reactor;

[0025] Figure 2 This is a schematic diagram of the new fuel loading room;

[0026] Figure 3 Schematic diagram of a charging and counting device in some embodiments;

[0027] Description of reference numerals:

[0028] Camera device 1, loading counting device 2, loading pipe 3, loading platform 4, loading box 5, fuel element storage container 6, new fuel loading room 7, loading counting device 8, fuel loading and unloading system buffer pipeline room 9. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following describes a method for counting the number of fuel element loadings in a pebble bed high temperature gas-cooled reactor according to an embodiment of the present invention with reference to the accompanying drawings.

[0031] See also Figure 1-Figure 3 The method for counting the number of fuel element loadings in a pebble bed high temperature gas-cooled reactor of the present invention comprises the following steps:

[0032] Determine the loading quantity;

[0033] After the loading is completed by the loading counting device 8, the loading counting device 8 is sent into the loading box 5, and the fuel elements are poured into the loading box 5 so that the fuel elements enter the loading pipe 3;

[0034] The camera device 1 counts the loading amount and monitors the entire loading process, and transmits the camera loading amount data to the loading controller;

[0035] The charging counting device 2 counts the fuel elements passing through the charging pipe 3 and transmits the counted charging amount data to the charging controller;

[0036] The charging controller compares and analyzes the photographed charging amount and the counted charging amount. If the two amounts are consistent, the charging is completed. If the two amounts are inconsistent, the charging amount is checked using the camera device 1.

[0037] See also Figure 1 First, the loading amount is determined, that is, the loading amount of the loading batch is determined. Before loading begins, the fuel elements in the new fuel loading room 7 are stored in the fuel element storage container 6. After loading begins, the fuel elements are taken from the designated fuel element storage container 6 for loading.

[0038] During the charging process, the charging counting device 8 is used to charge the material, see Figure 3 , the number of fuel elements contained in the charging and counting device 8 is fixed, that is, the number of fuel elements that each charging and counting device 8 can contain is a fixed value, and the charging amount of the fuel elements can be obtained according to the number of charging and counting devices 8. It can be understood that in the actual operation process, a charging and counting device 8 of appropriate specifications is selected according to the specific charging amount, so that when loading, it is not necessary to count one by one, but only to fill the charging and counting device 8. The final charging amount is the product of the number of loading times and the charging amount of the charging and counting device 8, which can reduce the workload and avoid counting errors.

[0039] After the loading is completed using the loading counting device 8 , the loading counting device 8 is sent into the loading box 5 , and the fuel elements are poured into the loading box 5 so that the fuel elements enter the loading pipe 3 .

[0040] Specifically, taking a charging and counting device 8 as an example, after the charging and counting device 8 is filled, the charging and counting device 8 is sent into the charging box 5 by means of the charging platform 4, and the fuel elements are poured into the charging box 5, so that the fuel elements enter the charging pipe 3, and the fuel elements enter the buffer pipe room 9 of the fuel loading and unloading system through the charging pipe 3. Among them, the charging platform 4 is arranged adjacent to the charging box 5, the bottom of the charging box 5 is connected to the charging pipe 3, and the fuel elements are arranged in a single row in the charging pipe 3, that is, only one fuel element is allowed to pass through the charging pipe 3 at a time.

[0041] The camera device 1 performs charging quantity statistics and full-process monitoring of the charging process, and transmits the captured charging quantity data to the charging controller.

[0042] Specifically, a camera device 1 is arranged above the loading platform 4, and the camera device 1 can be arranged directly opposite the loading platform 4 or slightly at a certain angle so that the loading can be counted by the camera device 1. It can be understood that multiple camera devices 1 can be arranged according to actual conditions, and the camera device 1 monitors the loading process of the fuel elements throughout the whole process. In addition, the camera device 1 has a data counting function, that is, the camera device 1 can count the number of fuel elements in the loading process, and the camera device 1 is electrically connected to the loading controller, and the camera device 1 transmits the data to the loading controller after counting the number of fuel elements.

[0043] In some embodiments, the data counting function of the camera device 1 can be understood as the camera device 1 can capture the loading counting device 8, that is, it can obtain the number of loading counting devices 8. Since the number of fuel elements loaded by each loading counting device 8 is fixed, the number of fuel elements can be obtained based on the number of loading counting devices 8 and the loading capacity of a single loading counting device 8.

[0044] In some embodiments, the camera device 1 includes a video recording component and a quantity counting component. The video recording component records the entire loading process, and the quantity counting component is used to count the number of fuel elements in the loading process.

[0045] Specifically, the camera device 1 has a recording function and a data counting function, wherein the recording element records the loading process, and the loading process can be reproduced according to the recording, which is used to check the loading amount when there is a difference in the loading amount; the quantity counting unit is used to count the number of fuel elements in the loading process. In some embodiments, the quantity counting unit can obtain the number of the loading counting device 8 by recording, and obtain the number of fuel elements according to the number of the loading counting device 8 and the loading amount of a single loading counting device 8.

[0046] The charging counting device 2 counts the fuel elements passing through the charging pipe 3 and transmits the counted charging amount data to the charging controller.

[0047] Specifically, the charging counting device 2 is arranged on the charging tube 3, and a plurality of charging counting devices 2 are arranged on the charging tube 3. It is understandable that a suitable number of charging counting devices 2 are arranged on the charging tube 3 according to actual conditions. When the fuel element moves through the charging counting device 2 in the charging tube 3, the charging counting device 2 counts it, and the charging counting device 2 is electrically connected to the charging controller, and the charging counting device 2 transmits the count value of the charging amount to the charging controller. It is understandable that when the batch loading is completed, the count value of the charging amount counted by each charging counting device 2 is consistent.

[0048] The charging controller compares and analyzes the photographed charging amount and the counted charging amount. If the two amounts are consistent, the charging is completed. If the two amounts are inconsistent, the charging amount is checked using the camera device 1.

[0049] Specifically, the loading controller checks the loading amount captured by the camera device 1 and the loading amount counted by the loading counting device 2, automatically determines whether the loading quantities are consistent, and gives a signal whether the problem needs to be handled. When the loading amount captured by the camera device 1 and the loading amount counted by the loading counting device 2 are consistent, it means that the data counted by both are accurate, and the loading is completed at this time; when the loading amount captured by the camera device 1 and the loading amount counted by the loading counting device 2 are inconsistent, it means that there is a deviation in the data counted by both. At this time, it is necessary to verify the data deviation problem in the loading amount statistics, specifically, reproduce the loading process through the recording function of the camera device 1, and verify the actual loading amount before loading is completed.

[0050] The charging controller comprises a data receiving unit and a data processing unit. The data receiving unit is used to receive data from the camera device 1 and the charging counting device 2. The data processing unit is used to process and analyze the data received by the data receiving unit.

[0051] Specifically, in some embodiments, the charging controller has a data receiving unit and a data processing unit, that is, the camera device 1 and the charging counting device 2 transmit statistical data to the data receiving unit, and the data processing unit processes and analyzes the data received by the data receiving unit.

[0052] The method of the present invention realizes accurate statistics of the charging quantity through the charging counting device 8, the camera device 1 and the charging counting device 2, which not only reduces the counting difficulty and workload of the charging personnel, but also meets the relevant requirements of nuclear material control, ensuring that the spherical fuel elements will not be stolen or lost.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms may be for different embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for counting the number of fuel element loadings for a pebble bed high temperature gas-cooled reactor, characterized in that: The following steps are involved: Determine the loading quantity; After the loading is completed by using the loading counting device, the loading counting device is sent into the loading box, and the fuel elements are poured into the loading box so that the fuel elements enter the loading pipe; The camera device counts the loading amount and monitors the entire loading process, and transmits the camera loading amount data to the loading controller. The number of fuel elements contained in each loading counting device is a fixed value, and the camera loading amount is the product of the number of loading times and the ball loading amount of the loading counting device; A loading counting device counts the fuel elements passing through the loading pipe and transmits counted loading amount data to the loading controller; The charging controller compares and analyzes the photographed charging amount and the counted charging amount. If the two amounts are consistent, the charging is completed. If the two amounts are inconsistent, the charging amount is checked using the camera device.

2. The method according to claim 1, characterized in that The camera device and the charging counting device are both electrically connected to the charging controller.

3. The method according to claim 1, characterized in that The charging controller includes a data receiving unit and a data processing unit. The data receiving unit is used to receive data from the camera device and the charging counting device, and the data processing unit is used to process and analyze the data received by the data receiving unit.

4. The method according to claim 1, characterized in that The camera device comprises a video recording component and a quantity counting component. The video recording component records the entire loading process, and the quantity counting component is used to count the number of fuel elements in the loading process.

5. The method according to claim 1, characterized in that The camera device is arranged above the loading platform.

6. The method according to claim 5, characterized in that The loading platform is arranged adjacent to the loading box.

7. The method according to claim 1, characterized in that The bottom of the loading box is connected to the loading tube, and the fuel elements are arranged in a single row in the loading tube.

8. The method according to claim 1, characterized in that The charging counting device is arranged on the charging pipe.

9. The method according to claim 1, characterized in that A plurality of charging counting devices are arranged on the charging pipe.

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