A pneumatic ball positioning device and method based on electromagnetic induction

Abstract

This invention relates to a pneumatic ball positioning device and method based on electromagnetic induction, comprising a sensing unit, a data acquisition unit, and a data processing unit. The sensing unit is installed on a first transmission pipe, detecting the pneumatic ball traveling within the first transmission pipe and outputting a corresponding induction signal. The first transmission pipe is the pipe between the measuring platform and the adapter of the reactor core active zone. The data acquisition unit is connected to the sensing unit and acquires the induction signal output by the sensing unit. The data processing unit is connected to the data acquisition unit and determines the jamming position of the pneumatic ball in the first transmission pipe based on the induction signal acquired by the data acquisition unit and the position information of the sensing unit. This invention can locate the jamming position of the pneumatic ball in the transmission pipe between the measuring platform and the reactor core; furthermore, it can also detect whether the pneumatic ball can enter the reactor core active zone under reactor shutdown conditions, ensuring the measurement accuracy of the pneumatic ball measurement system.

Description

Technical Field

[0001] This invention relates to the technical field of debugging and maintenance, and more specifically, to a pneumatic ball positioning device and method based on electromagnetic induction. Background Technology

[0002] The pneumatic ball measurement system for nuclear power plants is a mobile core neutron detection system used for core neutron flux measurement and core power distribution reconstruction. It utilizes high-purity nitrogen to blow vanadium-51-containing spheres into the core active zone, activating them into vanadium-52. The activated spheres are then blown out of the core to the measurement platform. Vanadium-52 spontaneously decays with a half-life of 3.74 minutes, releasing gamma particles. The number of gamma particles is proportional to the power in the core active zone where the sphere is located. The pneumatic ball measurement system drives the sphere through a transmission pipe, making its location unknown to commissioning or maintenance personnel.

[0003] Furthermore, if the pneumatic ball gets stuck in the transfer pipe between the measurement platform and the reactor core, the pneumatic ball measurement system itself cannot locate the stuck position. Moreover, existing pneumatic ball measurement systems cannot detect whether the ball can enter the active zone of the reactor core during reactor shutdown. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pneumatic ball positioning device and method based on electromagnetic induction, which addresses the shortcomings of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to construct a pneumatic ball positioning device based on electromagnetic induction, including: a sensing unit, a data acquisition unit and a data processing unit;

[0006] The sensing unit is installed on the first transmission pipe and is used to detect the pneumatic ball traveling in the first transmission pipe and output a corresponding sensing signal; the first transmission pipe is the pipe between the measuring platform and the adapter of the core active area.

[0007] The data acquisition unit is connected to the sensing unit and is used to acquire the sensing signal output by the sensing unit;

[0008] The data processing unit is connected to the data acquisition unit and is used to determine the jamming position of the pneumatic ball in the first transmission pipe based on the sensing signal acquired by the data acquisition unit and the position information of the sensing unit.

[0009] In the pneumatic ball positioning device based on electromagnetic induction described in this invention, the sensing unit includes: a plurality of magnetoelectric induction devices spaced apart on the first transmission pipe, and a fixing device corresponding to the magnetoelectric induction devices to fix the magnetoelectric induction devices on the first transmission pipe.

[0010] In the pneumatic ball positioning device based on electromagnetic induction described in this invention, the fixing device is threadedly matched with the magnetoelectric induction device.

[0011] In the pneumatic ball positioning device based on electromagnetic induction described in this invention, the magnetoelectric induction device is a passive two-wire magnetoelectric sensor.

[0012] The pneumatic ball positioning device based on electromagnetic induction described in this invention also includes: a measuring platform;

[0013] The measuring station is located at the end of the first transmission pipe furthest from the adapter.

[0014] The measuring platform is used to fill the pneumatic ball and measure the jamming position of the pneumatic ball in the second transmission pipe; the second transmission pipe is the pipe between the adapter and the entrance of the core active zone.

[0015] The pneumatic ball positioning device based on electromagnetic induction described in this invention further includes: a measurement unit;

[0016] The measuring unit is used to measure the jamming position of the pneumatic ball in the third transmission pipe;

[0017] The third transmission pipe is a pipe that extends from the adapter into the active zone of the reactor core.

[0018] This invention also provides a method for positioning a pneumatic ball based on electromagnetic induction, comprising the following steps:

[0019] The sensing unit detects whether a pneumatic ball is moving inside the first transmission pipe. If so, it outputs a sensing signal. The first transmission pipe is the pipe between the measuring station and the adapter of the reactor core active area.

[0020] The data acquisition unit acquires the sensing signal output by the sensing unit and transmits the sensing signal to the data processing unit;

[0021] The data processing unit receives the sensing signal and obtains the position information of the sensing unit based on the sensing signal;

[0022] The data processing unit determines the jammed position of the pneumatic ball in the first transmission pipe based on the position information of the sensing unit.

[0023] In the pneumatic ball positioning method based on electromagnetic induction described in this invention, the method further includes:

[0024] Open the adapter;

[0025] If there is a pneumatic ball at the adapter, then collect the pneumatic ball at the adapter.

[0026] The collected pneumatic balls were reloaded into the measuring platform;

[0027] The jamming position of the pneumatic ball in the second transmission pipe is measured using the measuring platform; the second transmission pipe is the pipe between the adapter and the entrance of the core active zone.

[0028] In the pneumatic ball positioning method based on electromagnetic induction described in this invention, the method further includes:

[0029] Open the adapter;

[0030] If there is no pneumatic ball at the adapter, the jamming position of the pneumatic ball in the third transmission pipe is measured by the measuring unit; the third transmission pipe is a pipe that extends from the adapter into the active zone of the reactor core.

[0031] In the pneumatic ball positioning method based on electromagnetic induction described in this invention, the measuring unit includes: a soft spring;

[0032] The jamming position of the pneumatic ball in the third transmission pipe as measured by the measuring unit includes:

[0033] The soft spring is inserted from the adapter into the pipe in the active zone of the reactor core;

[0034] If resistance is encountered, the insertion of the soft spring should cease.

[0035] Record the depth to which the soft spring extends into the pipe within the active region of the reactor core;

[0036] Based on the spring depth and the length of the pipe in the core active zone, the jamming position of the pneumatic ball in the third transmission pipe is determined.

[0037] The pneumatic ball positioning device and method based on electromagnetic induction of the present invention have the following beneficial effects: The pneumatic ball positioning device and method based on electromagnetic induction includes a sensing unit, a data acquisition unit, and a data processing unit; the sensing unit is installed on a first transmission pipe, detects the pneumatic ball traveling in the first transmission pipe, and outputs a corresponding sensing signal; the first transmission pipe is the pipe between the measuring platform and the adapter of the reactor core active area; the data acquisition unit is connected to the sensing unit and acquires the sensing signal output by the sensing unit; the data processing unit is connected to the data acquisition unit and determines the jamming position of the pneumatic ball in the first transmission pipe based on the sensing signal acquired by the data acquisition unit and the position information of the sensing unit. The present invention can locate the jamming position of the pneumatic ball in the transmission pipe between the measuring platform and the reactor core; in addition, it can also detect whether the pneumatic ball can enter the reactor core active area under reactor shutdown conditions, ensuring the measurement accuracy of the pneumatic ball measurement system. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the pneumatic ball positioning device based on electromagnetic induction provided in an embodiment of the present invention;

[0040] Figure 2 This is a flowchart illustrating an embodiment of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention.

[0041] Figure 3 This is a flowchart illustrating Embodiment 2 of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention.

[0042] Figure 4 This is a flowchart illustrating Embodiment 3 of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention. Detailed Implementation

[0043] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] refer to Figure 1 This invention provides a pneumatic ball positioning device based on electromagnetic induction.

[0045] Optionally, in this embodiment of the invention, the electromagnetic induction-based pneumatic ball positioning device can be applied to a nuclear power plant pneumatic ball measurement system to achieve position positioning of the pneumatic ball measurement system in the transmission pipeline. The transmission pipeline of the pneumatic ball measurement system includes: a first transmission pipeline 10, a second transmission pipeline 20, and a third transmission pipeline 30. The first transmission pipeline 10 is the pipeline between the measuring platform 50 and the adapter 40 in the reactor core active zone; the second transmission pipeline 20 is the pipeline between the adapter 40 and the entrance to the reactor core active zone; and the third transmission pipeline 30 is the pipeline extending from the adapter 40 into the reactor core active zone. The second transmission pipeline 20 and the third transmission pipeline 30 are an integral structure, and the first transmission pipeline 10 is connected to the second transmission pipeline 20 via the adapter 40. Figure 1 The 100 in the figure represents a pneumatic ball.

[0046] Specifically, such as Figure 1 As shown, the pneumatic ball positioning device based on electromagnetic induction includes: a sensing unit 60, a data acquisition unit 70, and a data processing unit 80.

[0047] The sensing unit 60 is installed on the first transmission pipe 10 and is used to detect the pneumatic ball moving in the first transmission pipe 10 and output the corresponding sensing signal.

[0048] The data acquisition unit 70 is connected to the sensing unit 60 and is used to acquire the sensing signals output by the sensing unit 60.

[0049] The data processing unit 80 is connected to the data acquisition unit 70 and is used to determine the jamming position of the pneumatic ball in the first transmission pipe 10 based on the sensing signal acquired by the data acquisition unit 70 and the position information of the sensing unit 60. Of course, it is understandable that in some other embodiments, the data processing unit 80 can be omitted; that is, after the data acquisition unit 70 acquires the sensing signal from the sensing unit 60, the jamming position of the pneumatic ball can be determined directly by combining this signal with the installation position of the sensing unit 60.

[0050] Optionally, in this embodiment of the invention, the sensing unit 60 includes: a plurality of magnetoelectric sensing devices spaced apart on the first transmission pipe 10, and a fixing device corresponding to the magnetoelectric sensing devices to fix the magnetoelectric sensing devices on the first transmission pipe 10.

[0051] Optionally, in this embodiment of the invention, the fixing device and the magnetoelectric induction device are threadedly connected. Optionally, in this embodiment of the invention, the magnetoelectric induction device is a passive two-wire magnetoelectric sensor.

[0052] Specifically, the fixing device is a cap-shaped structure with internal threads. The external structure of the magnetoelectric sensor is cylindrical, and one end of the cylinder has external threads. This external thread structure matches the internal thread structure of the fixing device, so that the magnetoelectric sensor can be fixed on the fixing device and fixed by the fixing device to the first transmission pipe 10.

[0053] Optionally, the fixing device has a through hole at the end away from the internal thread structure for the first transmission pipe 10 to pass through. Therefore, when a pneumatic ball travels through the transmission pipe, it can be detected by the magnetic pole of the magnetoelectric sensor and cause a change in magnetic flux.

[0054] Optionally, in this embodiment of the invention, the inductance of the magnetoelectric sensor is greater than or equal to 200mH.

[0055] Optionally, in this embodiment of the invention, the first transmission pipe 10 is made of stainless steel, which is a non-magnetic material, while the pneumatic ball is made of stainless iron, which has a high magnetic permeability. Therefore, based on this characteristic, the present invention fixes the magnetoelectric induction device on the first transmission pipe 10 by a fixing device. When the pneumatic ball passes through the magnetoelectric induction device, the magnetic poles of the magnetoelectric induction device will cause a change in magnetic flux. According to the principle of electromagnetic induction, the changed magnetic flux will generate an induced voltage, thereby outputting a corresponding induced signal.

[0056] Furthermore, the data acquisition unit 70 is connected to the other end of the magnetoelectric induction device (i.e. the end away from the magnetic pole) via a cable. When the magnetoelectric induction device generates an induced voltage, the induced voltage is acquired and stored by the data acquisition unit 70.

[0057] Optionally, in this embodiment of the invention, the data acquisition unit 70 can be a recorder. The number of recorders can be one or more. If there is only one recorder, it can be a recorder with multiple data acquisition ports to acquire the induced voltage generated by the corresponding magnetoelectric induction device. If there are multiple recorders, their number can be the same as the number of magnetoelectric induction devices.

[0058] Understandably, the present invention enables synchronous detection and rapid positioning by separately arranging multiple magnetoelectric induction devices on the first transmission pipe 10. Specifically, multiple magnetoelectric induction devices are separately installed on the first transmission pipe 10 to drive the ball. If the recorder detects that a ball has passed through a magnetoelectric induction device (the magnetoelectric induction device at that location generates an induced voltage), it indicates that there is no obstruction in the upstream pipe of that magnetoelectric induction device. If a magnetoelectric induction device at a certain downstream location does not generate an induced voltage, it indicates that the pneumatic ball is stuck between the magnetoelectric induction device at that location and the previous magnetoelectric induction device.

[0059] For example, suppose four magnetoelectric induction devices A, B, C, and D are sequentially installed on the first transmission pipe 10. At the start of the test, if the pneumatic ball does not get stuck in the first transmission pipe 10, it will pass sequentially through magnetoelectric induction devices A, B, C, and D. If the recorder can detect the induced voltage output by magnetoelectric induction device A but not by magnetoelectric induction device B, then based on the positions of magnetoelectric induction devices A and B and the induced voltage output by magnetoelectric induction device A, the pipe jam between the positions of magnetoelectric induction devices A and B can be accurately determined. Similarly, if the recorder can detect the induced voltage output by magnetoelectric induction devices A, B, and C but not by magnetoelectric induction device D, then the pipe jam between the positions of magnetoelectric induction devices C and D can be determined.

[0060] Of course, it is understandable that in some other embodiments, only one magnetoelectric induction device may be provided in the first transmission channel 10. When only one magnetoelectric induction device is installed, the specific positioning method is as follows:

[0061] First, fix the magnetoelectric induction device at a certain point in the first transmission pipe 10 to drive the pneumatic ball to move.

[0062] Second, if the recorder detects the induced voltage output by the magnetoelectric induction device, the data processing unit 80 can determine the location of the magnetoelectric induction device and whether there is any obstruction in the upstream pipeline.

[0063] Third, move the installation position of the magnetoelectric induction device downstream and repeat the pneumatic ball drive and induction measurement.

[0064] Fourth, if the recorder does not detect the induced voltage output by the magnetoelectric induction device, the data processing unit 80 can determine that there is a blockage in the upstream pipe where the magnetoelectric induction device is located.

[0065] Fifth, move the position of the magnetoelectric induction device upstream again, repeat the pneumatic ball driving and induction measurement until the jamming position of the pneumatic ball is found.

[0066] Furthermore, such as Figure 1 As shown, the pneumatic ball positioning device based on electromagnetic induction also includes a measuring platform 50.

[0067] The measuring station 50 is located at the end of the first transmission pipe 10 away from the adapter 40.

[0068] The measuring stage 50 is used to fill the pneumatic ball and to measure the jamming position of the pneumatic ball in the second transmission pipe 20.

[0069] After the first transfer pipe 10 is positioned, if the pneumatic ball is not stuck in the first transfer pipe 10, the system can continue to check if the pneumatic ball is stuck in the second transfer pipe 20, and measure the specific location. Specifically, open the adapter 40. If there is a pneumatic ball at the adapter 40, collect the pneumatic ball to prevent it from scattering at the adapter 40. Since there is a pneumatic ball at the adapter 40, it indicates that there is a jamming point somewhere in the pipe near the core active zone entrance at the adapter 40, preventing the pneumatic ball from entering the core active zone.

[0070] At this point, the collected pneumatic balls are refilled into the pipe of the measuring platform 50, i.e. Figure 1 As shown, on the left side of the measuring platform 50, the collected pneumatic balls are refilled into the pipe of the measuring platform 50. After filling, a soft spring is inserted into the pipe of the measuring platform 50 at the filling port. When resistance is encountered, the spring is removed, and the length of the spring inserted into the pipe of the measuring platform 50 (denoted as L2) is recorded. The distance between the jamming point and the adapter 40 can then be obtained as: L1 - L0 + L2, where L0 is the length of the pipe of the measuring platform 50. It can be understood that in this embodiment of the invention, the structure on the right side of the pipe inside the measuring platform 50 is similar to... Figure 1 The pneumatic ball has the same pipe structure inside the finger sleeve 90, that is, at the rightmost end of the pipe inside the measuring platform 50, there is a ball stop. At this time, gas (nitrogen) can pass through, but the pneumatic ball cannot pass through.

[0071] Furthermore, the electromagnetic induction-based pneumatic ball positioning device also includes a measurement unit.

[0072] The measuring unit is used to measure the jamming position of the pneumatic ball within the third transmission pipe 30. Optionally, in this embodiment of the invention, the measuring unit can be a soft spring.

[0073] Specifically, if there is no pneumatic ball at adapter 40 when it is opened, insert the soft spring from adapter 40 into the third transmission pipe 30. If resistance is encountered during insertion, stop and record the current spring depth (let's call it L3) within the third transmission pipe 30. Figure 1 As shown), by combining the length of the third transmission pipe 30 within the finger sleeve 90, it can be determined whether the pneumatic ball has reached the core active region or is stuck at a certain position within the finger sleeve 90 (where the distance between this position and the adapter 40 is L1+L3), i.e. Figure 1 As shown.

[0074] Further, refer to Figure 2 This is a schematic flowchart illustrating a first embodiment of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention. Optionally, this pneumatic ball positioning method based on electromagnetic induction can be implemented using the pneumatic ball positioning device based on electromagnetic induction disclosed in the embodiments of the present invention.

[0075] like Figure 2 As shown, in this embodiment, the pneumatic ball positioning method based on electromagnetic induction includes the following steps:

[0076] Step S201: The sensing unit 60 detects whether a pneumatic ball is moving within the first transmission pipe 10. If so, a sensing signal is output. The first transmission pipe 10 is the pipe between the measuring station 50 and the adapter 40 in the reactor core active area.

[0077] Step S202: The data acquisition unit 70 acquires the sensing signal output by the sensing unit 60 and transmits the sensing signal to the data processing unit 80.

[0078] Step S203: The data processing unit 80 receives the sensing signal and obtains the position information of the sensing unit 60 based on the sensing signal.

[0079] Step S204: The data processing unit 80 determines the jamming position of the pneumatic ball in the first transmission pipe 10 based on the position information of the sensing unit 60.

[0080] Specifically, multiple magnetoelectric induction devices are installed separately on the first transmission pipe 10 to drive the ball. If the recorder detects that a ball passes through a magnetoelectric induction device (the magnetoelectric induction device at that location generates an induced voltage), it indicates that the upstream sub-pipe of the magnetoelectric induction device is not stuck. If a magnetoelectric induction device at a certain point downstream does not generate an induced voltage, it indicates that the pneumatic ball is stuck between the magnetoelectric induction device at that point and the previous magnetoelectric induction device.

[0081] For example, suppose four magnetoelectric induction devices A, B, C, and D are sequentially installed on the first transmission pipe 10. At the start of the test, if the pneumatic ball does not get stuck in the first transmission pipe 10, it will pass sequentially through magnetoelectric induction devices A, B, C, and D. If the recorder can detect the induced voltage output by magnetoelectric induction device A but not by magnetoelectric induction device B, then based on the positions of magnetoelectric induction devices A and B and the induced voltage output by magnetoelectric induction device A, the pipe jam between the positions of magnetoelectric induction devices A and B can be accurately determined. Similarly, if the recorder can detect the induced voltage output by magnetoelectric induction devices A, B, and C but not by magnetoelectric induction device D, then the pipe jam between the positions of magnetoelectric induction devices C and D can be determined.

[0082] Of course, it is understandable that in some other embodiments, only one magnetoelectric induction device may be provided in the first transmission channel 10. When only one magnetoelectric induction device is installed, the specific positioning method is as follows:

[0083] First, fix the magnetoelectric induction device at a certain point in the first transmission pipe 10 to drive the pneumatic ball to move.

[0084] Second, if the recorder detects the induced voltage output by the magnetoelectric induction device, the data processing unit 80 can determine the location of the magnetoelectric induction device and whether there is any obstruction in the upstream pipeline.

[0085] Third, move the installation position of the magnetoelectric induction device downstream and repeat the pneumatic ball drive and induction measurement.

[0086] Fourth, if the recorder does not detect the induced voltage output by the magnetoelectric induction device, the data processing unit 80 can determine that there is a blockage in the upstream pipe where the magnetoelectric induction device is located.

[0087] Fifth, move the position of the magnetoelectric induction device upstream again, repeat the pneumatic ball driving and induction measurement until the jamming position of the pneumatic ball is found.

[0088] refer to Figure 3This is a flowchart illustrating Embodiment 2 of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention.

[0089] like Figure 3 As shown, in this embodiment, the pneumatic ball positioning method based on electromagnetic induction includes the following steps:

[0090] Step S301: Open adapter 40.

[0091] Step S302: If there is a pneumatic ball at the adapter 40, then collect the pneumatic ball at the adapter 40.

[0092] Step S303: Refill the collected pneumatic balls into the measuring stage 50.

[0093] Step S304: Measure the jamming position of the pneumatic ball in the second transmission pipe 20 using the measuring table 50; the second transmission pipe 20 is the pipe between the adapter 40 and the entrance of the reactor core active zone.

[0094] Specifically, open adapter 40. If there are pneumatic balls at adapter 40, collect them to prevent them from scattering. The presence of pneumatic balls at adapter 40 indicates a blockage in the pipe near the core active zone entrance, preventing the pneumatic balls from entering the core active zone.

[0095] At this point, the collected pneumatic balls are refilled into the pipe of the measuring platform 50, i.e. Figure 1 As shown, on the left side of the measuring platform 50, the collected pneumatic balls are refilled into the pipe of the measuring platform 50. After filling, a soft spring is inserted into the pipe of the measuring platform 50 at the filling port. When resistance is encountered, the spring is removed and the length of the spring inserted into the pipe of the measuring platform 50 (let's call it L2) is recorded. Then the distance between the jamming point and the adapter 40 can be obtained as: L1-L0+L2, where L0 is the length of the pipe of the measuring platform 50.

[0096] refer to Figure 4 This is a flowchart illustrating Embodiment 2 of the pneumatic ball positioning method based on electromagnetic induction provided by the present invention.

[0097] like Figure 4 As shown, in this embodiment, the pneumatic ball positioning method based on electromagnetic induction includes the following steps:

[0098] Step S401: Open adapter 40.

[0099] Step S402: If there is no pneumatic ball at the adapter 40, the jamming position of the pneumatic ball in the third transfer pipe 30 is measured by the measuring unit. The third transfer pipe 30 is a pipe that extends from the adapter 40 into the active region of the reactor core.

[0100] In some embodiments, measuring the jamming position of the pneumatic ball within the third transmission pipe 30 includes: extending a soft spring from the adapter 40 into the pipe within the active region of the reactor core; stopping the extension of the soft spring if resistance is encountered; recording the spring depth of the soft spring extending into the pipe within the active region of the reactor core; and determining the jamming position of the pneumatic ball within the third transmission pipe 30 based on the spring depth and the length of the pipe within the active region of the reactor core.

[0101] Specifically, if there is no pneumatic ball at adapter 40 when it is opened, insert the soft spring from adapter 40 into the third transmission pipe 30. If resistance is encountered during insertion, stop and record the current spring depth (let's call it L3) within the third transmission pipe 30. Figure 1 As shown), by combining the length of the third transmission pipe 30 within the finger sleeve 90, it can be determined whether the pneumatic ball has reached the core active region or is stuck at a certain position within the finger sleeve 90 (where the distance between this position and the adapter 40 is L1+L3), i.e. Figure 1 As shown.

[0102] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0103] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0104] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0105] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They do not limit the scope of protection of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A pneumatic ball positioning device based on electromagnetic induction, characterized in that, include: Sensing unit, data acquisition unit, and data processing unit; The sensing unit is installed on the first transmission pipe and is used to detect the pneumatic ball traveling in the first transmission pipe and output a corresponding sensing signal; the first transmission pipe is the pipe between the measuring platform and the adapter of the reactor core active area; the sensing unit includes: a plurality of magnetoelectric sensing devices spaced apart on the first transmission pipe, and a fixing device corresponding to the magnetoelectric sensing devices to fix the magnetoelectric sensing devices on the first transmission pipe; the magnetoelectric sensing devices are passive two-wire magnetoelectric sensors; the fixing device is a cap-shaped structure with internal threads, and the external structure of the magnetoelectric sensor is a cylinder with external threads at one end. The external thread structure matches the internal thread structure so that the magnetoelectric sensor can be fixed on the fixing device, and the fixing device has a through hole at the end away from the internal thread structure for the first transmission pipe to pass through. The data acquisition unit is connected to the sensing unit and is used to acquire the sensing signal output by the sensing unit; The data processing unit is connected to the data acquisition unit and is used to determine the jamming position of the pneumatic ball in the first transmission pipe based on the sensing signal acquired by the data acquisition unit and the position information of the sensing unit.

2. The pneumatic ball positioning device based on electromagnetic induction according to claim 1, characterized in that, The fixing device is threadedly connected to the magnetoelectric induction device.

3. The pneumatic ball positioning device based on electromagnetic induction according to claim 1, characterized in that, Also includes: measuring platform; The measuring station is located at the end of the first transmission pipe furthest from the adapter. The measuring platform is used to fill the pneumatic ball and measure the jamming position of the pneumatic ball in the second transmission pipe; the second transmission pipe is the pipe between the adapter and the entrance of the core active zone.

4. The pneumatic ball positioning device based on electromagnetic induction according to claim 1, characterized in that, It also includes: a measurement unit; The measuring unit is used to measure the jamming position of the pneumatic ball in the third transmission pipe; The third transmission pipe is a pipe that extends from the adapter into the active zone of the reactor core.

5. A method for positioning a pneumatic ball based on electromagnetic induction, characterized in that, Includes the following steps: The sensing unit detects whether a pneumatic ball is moving in the first transmission pipe; if so, it outputs a sensing signal. The first transmission pipe is a pipe between the measuring station and the adapter of the reactor core active area; the sensing unit includes: a plurality of magnetoelectric induction devices spaced apart on the first transmission pipe, and a fixing device corresponding to the magnetoelectric induction devices to fix the magnetoelectric induction devices on the first transmission pipe; the magnetoelectric induction device is a passive two-wire magnetoelectric sensor; the fixing device is a cap-shaped structure with internal threads, and the external structure of the magnetoelectric sensor is a cylinder with external threads at one end. The external thread structure matches the internal thread structure so that the magnetoelectric sensor can be fixed on the fixing device, and the fixing device has a through hole at the end away from the internal thread structure for the first transmission pipe to pass through. The data acquisition unit acquires the sensing signal output by the sensing unit and transmits the sensing signal to the data processing unit; The data processing unit receives the sensing signal and obtains the position information of the sensing unit based on the sensing signal; The data processing unit determines the jammed position of the pneumatic ball in the first transmission pipe based on the position information of the sensing unit.

6. The pneumatic ball positioning method based on electromagnetic induction according to claim 5, characterized in that, The method further includes: Open the adapter; If there is a pneumatic ball at the adapter, then collect the pneumatic ball at the adapter. The collected pneumatic balls were reloaded into the measuring platform; The jamming position of the pneumatic ball in the second transmission pipe is measured using the measuring platform; the second transmission pipe is the pipe between the adapter and the entrance of the core active zone.

7. The pneumatic ball positioning method based on electromagnetic induction according to claim 5, characterized in that, The method further includes: Open the adapter; If there is no pneumatic ball at the adapter, the jamming position of the pneumatic ball in the third transmission pipe is measured by the measuring unit; the third transmission pipe is a pipe that extends from the adapter into the active zone of the reactor core.

8. The pneumatic ball positioning method based on electromagnetic induction according to claim 7, characterized in that, The measuring unit includes: a soft spring; Measuring the jamming position of the pneumatic ball within the third transmission pipe using the measuring unit includes: The soft spring is inserted from the adapter into the pipe in the active zone of the reactor core; If resistance is encountered, the insertion of the soft spring should cease. Record the depth to which the soft spring extends into the pipe within the active region of the reactor core; Based on the spring depth and the length of the pipe in the core active zone, the jamming position of the pneumatic ball in the third transmission pipe is determined.

Images