A rotary sorting and conveying device for spherical fuel elements of high temperature gas-cooled reactors

Abstract

The invention discloses a rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements, comprising a rotary sorting and conveying device body, wherein the rotary sorting and conveying device body comprises a conveying device shell and a rotary device inner tube, wherein one end of the rotary device inner tube is bent, and the other end of the rotary device inner tube is inserted into the conveying device shell, and a cavity is formed between the rotary device inner tube and the conveying device shell, and an installation base is arranged on the outer wall of the rotary device inner tube, and a permanent magnet is arranged on the installation base, and a plurality of groups of adjustable electromagnetic coils are arranged on the inner wall of the conveying device shell, and each group of adjustable electromagnetic coils is respectively connected to an electromagnetic coil power supply system, and the device can realize the sorting and conveying of different types of high temperature gas-cooled reactor spherical fuel elements.

Description

Technical Field

[0001] The invention relates to a rotary sorting and conveying device, in particular to a rotary sorting and conveying device for spherical fuel elements of a high temperature gas-cooled reactor. Background Art

[0002] The pebble bed high temperature gas-cooled reactor uses spherical fuel elements. Currently, spherical fuel elements with different fuel consumption or other different classification properties are screened and selected through diverters. This selection method can only divide the spherical fuel elements into two categories, and one device cannot achieve multi-category differentiation.

[0003] At present, the spherical fuel elements of the pebble bed high temperature gas-cooled reactor are divided into recycled fuel and spent fuel during the cycle process. It is impossible to carry out detailed fuel management for spherical fuel elements with different burnup levels, and it is impossible to achieve refined management during the loading and unloading process and the storage process of recycled fuel. In addition, in the process of studying fuel elements with other different properties (such as different enrichment), it is also impossible to distinguish these fuel elements into multiple categories. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements, which can realize the sorting and conveying of different types of high temperature gas-cooled reactor spherical fuel elements.

[0005] In order to achieve the above-mentioned purpose, the rotary sorting and conveying device for high-temperature gas-cooled reactor spherical fuel elements described in the present invention includes a rotary sorting and conveying device body, the rotary sorting and conveying device body includes a conveying device shell and a rotary device inner tube, one end of the rotary device inner tube is bent, and the other end of the rotary device inner tube is inserted into the conveying device shell, a cavity is formed between the rotary device inner tube and the conveying device shell, an installation base is provided on the outer wall of the rotary device inner tube, a permanent magnet is provided on the installation base, and a plurality of groups of adjustable electromagnetic coils are provided on the inner wall of the conveying device shell, and each group of adjustable electromagnetic coils is respectively connected to the electromagnetic coil power supply system.

[0006] The mounting base is a ring structure, and the permanent magnet is embedded in the mounting base.

[0007] It also includes a conversion angle measurement system, which includes a power supply system for a displacement measurement device, a rotation angle measurement resistor, a rotation angle measurement resistor connecting cable and two angle measurement connecting pressing plates, wherein the rotation angle measurement resistor is an arc-shaped structure, the two ends of the rotation angle measurement resistor are connected by an insulating material, the rotation angle measurement resistor is sleeved on a permanent magnet mounting base, the two angle measurement connecting pressing plates are respectively pressed on the upper and lower sides of the rotation angle measurement resistor, and the angle measurement connecting pressing plate is connected to the power supply system of the displacement measurement device through the rotation angle measurement resistor connecting cable.

[0008] The cold helium supply system is connected with the cavity through the first isolation valve group and the chamber positive pressure control valve.

[0009] It also includes a chamber positive pressure controller and a pipeline pressure monitoring system. A chamber pressure sensor is arranged in the cavity. The pipeline pressure monitoring system, the chamber pressure sensor and the chamber positive pressure control valve are connected to the chamber positive pressure controller.

[0010] An equipment cooling water supply ring pipe is arranged in the cavity, and a plurality of equipment cooling water pipes are connected to the equipment cooling water supply ring pipe. The equipment cooling water system is connected to the equipment cooling water supply ring pipe via a second isolation valve group.

[0011] A supporting and positioning bearing is arranged between the mounting base and the housing of the conveying device.

[0012] The supporting and locating bearing is a rolling bearing structure.

[0013] Each group of adjustable electromagnetic coils is distributed in sequence along the circumferential direction.

[0014] The present invention has the following beneficial effects:

[0015] During specific operation, the rotary sorting and conveying device for high-temperature gas-cooled reactor spherical fuel elements of the present invention adjusts the direction and magnitude of the current flowing in each group of adjustable electromagnetic coils according to the type of high-temperature gas-cooled reactor spherical fuel elements, so as to change the magnetic field force exerted on the permanent magnet, thereby driving the deflection of the inner tube of the rotating device, thereby achieving angle adjustment of the inner tube of the rotating device, and then causing the high-temperature gas-cooled reactor spherical fuel elements to fall to different positions, so as to achieve sorting and conveying of different types of high-temperature gas-cooled reactor spherical fuel elements. The operation is simple, convenient and extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention;

[0018] Figure 3 It is a structural diagram of the angle measurement component in the present invention.

[0019] Among them, 1 is a spherical fuel element of a high-temperature gas-cooled reactor, 2 is a rotating sorting and conveying device body, 3 is a conveying device shell, 4 is an inner tube of a rotating device, 5 is a permanent magnet, 6 is a mounting base, 7 is a supporting and positioning bearing, 8 is a rotation angle measuring resistor, 9 is a cold helium supply system, 10 is an equipment cooling water system, 11 is a chamber positive pressure controller, 12 is an equipment cooling water supply ring pipe, 13 is a chamber pressure sensor, 14 is an adjustable electromagnetic coil, 15 is a rotation angle measuring resistor connecting cable, 16 is a chamber positive pressure control valve, 17 is an equipment cooling water pipe, 18 is a displacement measuring device power supply system, 19 is an electromagnetic coil power supply system, 20 is a pipeline pressure monitoring system, 211 is a first isolation valve group, 212 is a second isolation valve group, 22 is an angle measurement connecting press sheet, and 23 is an insulating material. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0021] refer to Figures 1 to 3 The rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements of the present invention comprises a rotary sorting and conveying device body 2, the rotary sorting and conveying device body 2 comprises a conveying device shell 3 and a rotary device inner tube 4, one end of the rotary device inner tube 4 is bent, the other end of the rotary device inner tube 4 is inserted into the conveying device shell 3, a cavity is formed between the rotary device inner tube 4 and the conveying device shell 3, a mounting base 6 is arranged on the outer wall of the rotary device inner tube 4, a permanent magnet 5 is arranged on the mounting base 6, and a plurality of groups of adjustable electromagnetic coils 14 are arranged on the inner wall of the conveying device shell 3, and each group of adjustable electromagnetic coils 14 is respectively connected to the electromagnetic coil power supply system 19.

[0022] The present invention also includes a conversion angle measurement system, which includes a displacement measurement device power supply system 18, a rotation angle measurement resistor 8, a rotation angle measurement resistor connecting cable 15 and two angle measurement connecting pressing plates 22, wherein the mounting base 6 is a ring structure, the permanent magnet 5 is embedded in the mounting base 6, the rotation angle measurement resistor 8 is an arc structure, the two ends of the rotation angle measurement resistor 8 are connected by an insulating material 23, the rotation angle measurement resistor 8 is sleeved on the mounting base 6, and the two angle measurement connecting pressing plates 22 are respectively pressed on the upper and lower sides of the rotation angle measurement resistor 8, and the angle measurement connecting pressing plate 22 is connected to the displacement measurement device power supply system 18 through the rotation angle measurement resistor connecting cable 15.

[0023] The present invention also includes a chamber positive pressure controller 11 and a pipeline pressure monitoring system 20. A chamber pressure sensor 13 is arranged in the cavity. The pipeline pressure monitoring system 20, the chamber pressure sensor 13 and the chamber positive pressure control valve 16 are connected to the chamber positive pressure controller 11.

[0024] The cold helium supply system 9 is connected to the cavity through the first isolation valve group 211 and the chamber positive pressure control valve 16; an equipment cooling water supply ring pipe 12 is arranged in the cavity, and a plurality of equipment cooling water pipes 17 are connected to the equipment cooling water supply ring pipe 12, and the equipment cooling water system 10 is connected to the equipment cooling water supply ring pipe 12 through the second isolation valve group 212.

[0025] A supporting and positioning bearing 7 is arranged between the mounting base 6 and the conveying device housing 3 , and the supporting and positioning bearing 7 is a rolling bearing structure.

[0026] During operation, the direction and magnitude of the current flowing in each group of adjustable electromagnetic coils 14 are adjusted to change the magnetic field force on the permanent magnet 5, thereby driving the inner tube 4 of the rotating device to deflect, thereby achieving angle adjustment of the inner tube 4 of the rotating device, and then causing the high-temperature gas-cooled reactor spherical fuel element 1 to fall to different positions. Among them, all the adjustable electromagnetic coils 14 are divided into four groups, among which the four groups of adjustable electromagnetic coils 14 are symmetrically distributed for easy control.

[0027] The resistance values ​​of the rotation angle measuring resistor 8 in the 360° direction are R respectively. The 0° position and the 360° position are isolated by the insulating material 23. The total resistance of the measuring resistor connecting cable 15 and other parts of the line is δ. The voltage U and current I between the two angle measuring connecting pressing plates 22 are measured. Before work, the functional relationship α=f(U, I, R, δ) of the angle α of the inner tube 4 of the rotating device is determined through debugging. During work, this functional relationship is called to obtain the angle of the inner tube 4 of the rotating device.

[0028] In addition, the present invention adopts two cooling methods, namely, cold helium and cooling water, wherein the two cooling methods can be switched freely. In general, cooling is performed by cold helium, and in extreme cases, cooling is performed by cooling water. In the event of an accident, the two cooling methods can ensure that the cooling of the device has sufficient redundancy, and normal operation is not affected even in the event of loss of cooling water or cooling gas. A first isolation valve group 211 and a second isolation valve group 212 are provided to ensure the sealing of the system in the event of an extremely serious accident, so that radioactive substances will not leak out.

[0029] The mounting base 6 is installed in the conveying device housing 3 through a supporting and positioning bearing 7 with a concave groove. The supporting and positioning bearing 7 is a rolling bearing structure, which plays a role in positioning and supporting weight. The supporting and positioning bearing 7 is a detachable structure. During the maintenance of the device, the wear of the equipment and components is checked, and the vulnerable parts are replaced.

Claims

1. A rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements, characterized in that: The invention comprises a rotating sorting and conveying device body (2), wherein the rotating sorting and conveying device body (2) comprises a conveying device shell (3) and a rotating device inner tube (4), wherein one end of the rotating device inner tube (4) is bent, and the other end of the rotating device inner tube (4) is inserted into the conveying device shell (3), and a cavity is formed between the rotating device inner tube (4) and the conveying device shell (3); a mounting base (6) is arranged on the outer wall of the rotating device inner tube (4), and a permanent magnet (5) is arranged on the mounting base (6); and a plurality of groups of adjustable electromagnetic coils (14) are arranged on the inner wall of the conveying device shell (3), and each group of adjustable electromagnetic coils (14) is respectively connected to an electromagnetic coil power supply system (19); The mounting base (6) is an annular structure, and the permanent magnets (5) are symmetrically embedded in the mounting base (6) in two stages; The invention also comprises a conversion angle measurement system, which comprises a displacement measurement device power supply system (18), a rotation angle measurement resistor (8), a rotation angle measurement resistor connecting cable (15) and two angle measurement connecting pressing pieces (22), wherein the rotation angle measurement resistor (8) is an arc-shaped structure, two ends of the rotation angle measurement resistor (8) are connected by an insulating material (23), the rotation angle measurement resistor (8) is sleeved on a mounting base (6), the two angle measurement connecting pressing pieces (22) are respectively pressed on the upper and lower sides of the rotation angle measurement resistor (8), and the angle measurement connecting pressing piece (22) is connected to the displacement measurement device power supply system (18) through the rotation angle measurement resistor connecting cable (15); The cold helium supply system (9) is connected to the chamber through the first isolation valve group (211) and the chamber positive pressure control valve (16); It also includes a chamber positive pressure controller (11) and a pipeline pressure monitoring system (20), a chamber pressure sensor (13) is arranged in the cavity, and the pipeline pressure monitoring system (20), the chamber pressure sensor (13) and the chamber positive pressure control valve (16) are connected to the chamber positive pressure controller (11); An equipment cooling water supply ring pipe (12) is arranged in the cavity, and a plurality of equipment cooling water pipes (17) are connected to the equipment cooling water supply ring pipe (12). The equipment cooling water system (10) is connected to the equipment cooling water supply ring pipe (12) via a second isolation valve group (212).

2. The rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements according to claim 1, characterized in that: A supporting and positioning bearing (7) is arranged between the mounting base (6) and the conveying device housing (3).

3. The rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements according to claim 2, characterized in that: The supporting and positioning bearing (7) is a rolling bearing structure.

4. The rotary sorting and conveying device for high temperature gas-cooled reactor spherical fuel elements according to claim 1, characterized in that: Each group of adjustable electromagnetic coils (14) is distributed in sequence along the circumferential direction.

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