Spherical fuel element path conversion device

Abstract

The spherical fuel element path conversion device comprises a box-type main body and a piston body, the box-type main body is provided with a containing cavity, the box-type main body is provided with a spherical fuel element inlet, at least two spherical fuel element outlets and a gas inlet which are communicated with the containing cavity, and the gas inlet is communicated with the containing cavity. The gas inlet is connected to the inflation and deflation assembly; the piston body is movably arranged in the containing cavity, a plurality of channels are formed in the piston body and correspond to the spherical fuel element outlets in a one-to-one mode, and by changing the position of the piston body, all the channels can communicate with the spherical fuel element inlets and the corresponding spherical fuel element outlets. According to the spherical fuel element path conversion device, the piston body is pushed to move left and right according to the pneumatic principle to achieve conversion of spherical fuel element channel paths, rapid switching of outlets of different spherical fuel elements can be achieved, compared with an existing device, components such as a motor, a magnetic driver and an oilless bearing are omitted, and the spherical fuel element path conversion device is simple in structure and easy to achieve.

Description

Technical Field

[0001] The present application relates to the technical field of pebble bed high temperature gas-cooled reactors, and more specifically, to a spherical fuel element path conversion device. Background Art

[0002] The pebble-bed high-temperature gas-cooled reactor utilizes a continuous refueling technology, which involves unloading a large number of spherical fuel elements from the core and reloading them through numerous equipment and pipelines. During this process, these spherical fuel elements must be transferred from one pipeline to different downstream channels according to different needs. Existing technology uses a motor to rotate a magnetic drive, which in turn rotates a rotor to deliver the spherical fuel elements to outlets at different angles. This technology is costly and complex.

[0003] Therefore, how to improve the complex structure of the existing device has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present application is to provide a spherical fuel element path conversion device to improve the complex structure of the existing device.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] A spherical fuel element path conversion device, comprising:

[0007] A box-type body having an accommodating cavity, the box-type body being provided with a spherical fuel element inlet, a spherical fuel element outlet, and a gas inlet communicating with the accommodating cavity, wherein the number of the spherical fuel element outlets includes at least two, and the gas inlet is connected to the gas charging and discharging assembly;

[0008] A piston body is movably disposed in the accommodating cavity, and a plurality of channels are provided on the piston body, each of which corresponds one-to-one to the outlet of the spherical fuel element. By changing the position of the piston body, each of the channels can connect the inlet of the spherical fuel element and the corresponding outlet of the spherical fuel element.

[0009] Optionally, in the above-mentioned spherical fuel element path conversion device, a communicating hole communicating with the channel is provided on the piston body, the communicating hole is connected to the accommodating cavity, and the communicating hole is provided at an end of the piston body away from the gas inlet.

[0010] Optionally, in the above-mentioned spherical fuel element path conversion device, a positioning structure is provided between the box-type main body and the piston body, and the positioning structure includes at least one of a spring ball structure, a magnetic positioning structure or a snap positioning structure.

[0011] Optionally, in the above-mentioned spherical fuel element path conversion device, the positioning structure includes a spring top ball structure, and the spring top ball structure is arranged on one of the box-type main body and the piston body, and the other is provided with a positioning hole that cooperates with the spring top ball structure.

[0012] Optionally, in the above-mentioned spherical fuel element path conversion device, the spring ball structure is provided on the piston body, the positioning hole is provided on the box-type main body, and along the movement path of the piston body, the positioning holes include a plurality of holes corresponding to the outlets of the spherical fuel elements;

[0013] The piston body is provided with a groove, and the spring-ball structure includes a spring and a ball arranged in the groove, one end of the spring is connected to the wall surface of the groove, and the other end is in contact with or connected to the ball.

[0014] Optionally, in the above-mentioned spherical fuel element path conversion device, the edge of the positioning hole is provided with a guiding slope.

[0015] Optionally, in the above-mentioned spherical fuel element path conversion device, the positioning structure includes an elastic clip and a slot cooperating with the elastic clip, one of the elastic clip and the slot is arranged on the box-type main body, and the other is arranged on the piston body.

[0016] Optionally, in the above-mentioned spherical fuel element path conversion device, a sealing structure is provided between the piston body and the box-type main body, and the sealing structure includes sealing rings provided at both ends of the piston body.

[0017] Optionally, in the above-mentioned spherical fuel element path conversion device, the sealing structure further includes a sleeve, and the sleeve is arranged on the box-type main body.

[0018] Optionally, in the above-mentioned spherical fuel element path conversion device, the box-type main body includes a shell and a flange plate connected to the shell, and the shell and the flange plate are detachably connected.

[0019] It can be seen from the above scheme that the spherical fuel element path conversion device disclosed in the present application uses pneumatic principles to push the piston body to move left and right to achieve the conversion of the spherical fuel element channel path, and can realize the rapid switching of different spherical fuel element outlets. Compared with existing devices, it omits components such as motors, magnetic drives, and bearings, and has a simple structure and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 Schematic diagram of the structure of the spherical fuel element path conversion device disclosed in the embodiment of this application Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of the spherical fuel element path conversion device disclosed in the embodiment of this application Figure 2 ;

[0023] Figure 3 for Figure 2 Middle AA section view.

[0024] Among them, 10 is a box-type body, 101 is a shell, 102 is a flange plate, 11 is a receiving cavity, 12 is a spherical fuel element inlet, 13 is a spherical fuel element outlet, 131 is a first spherical fuel element outlet, 132 is a second spherical fuel element outlet, and 14 is a gas inlet;

[0025] 20 is the piston body, 21 is the channel, 211 is the second channel, 212 is the first channel, and 22 is the communicating hole;

[0026] 30 is a positioning structure, 31 is a spring-top ball structure, 311 is a spring, 312 is a ball, and 32 is a positioning hole;

[0027] 40 is a sealing structure, 41 is a sealing ring, and 42 is a sleeve. DETAILED DESCRIPTION

[0028] The core of this application is to disclose a spherical fuel element path conversion device to improve the complex structure of the existing device.

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the present application discloses a spherical fuel element path conversion device, including a box-type main body 10 and a piston body 20.

[0031] The box-type main body 10 has a accommodating chamber 11, and is provided with a spherical fuel element inlet 12, a spherical fuel element outlet 13, and a gas inlet 14 in communication with the accommodating chamber 11. The number of the spherical fuel element outlets 13 includes at least two, and the gas inlet 14 is connected to a gas charging and discharging assembly, which is used to inflate and exhaust gas into the accommodating chamber 11. The piston body 20 is movably arranged in the accommodating chamber 11. Preferably, the piston body 20 is slidably fitted with the accommodating chamber 11. A plurality of channels 21 are provided on the piston body 20, and the channels 21 correspond one-to-one with the spherical fuel element outlets 13. By changing the position of the piston body 20, each channel 21 can connect the spherical fuel element inlet 12 and the corresponding spherical fuel element outlet 13.

[0032] The spherical fuel element outlets 13 are taken as an example to illustrate that there are two of them. Figure 1-Figure 3 As shown, the spherical fuel element outlet 13 includes a first spherical fuel element outlet 131 and a second spherical fuel element outlet 132. The piston body 20 is provided with two channels 21, namely a first channel 212 and a second channel 211. When the spherical fuel element needs to be discharged from the first spherical fuel element outlet 131, the gas filling and discharge assembly is used to discharge the gas into the accommodating chamber 11 through the gas inlet 14 ( Figure 2 The left side of the piston body 20 is inflated with gas, preferably helium, pushing the piston body 20 to the right until the first channel 212 is connected to the spherical fuel element inlet 12 and the first spherical fuel element outlet 131. The spherical fuel elements discharged from the core enter the first channel 212 through the spherical fuel element inlet 12 and are discharged from the first spherical fuel element outlet 131.

[0033] like Figure 1-Figure 3 As shown, when the spherical fuel elements need to be discharged from the second spherical fuel element outlet 132, the gas on the left side of the piston body 20 in the accommodating chamber 11 is pumped out by the gas filling and deflation assembly. The gas pressure on the right side of the piston body 20 is greater than that on the left side, and the piston body 20 moves leftward until the second passage 211 connects with the spherical fuel element inlet 12. The spherical fuel elements discharged from the core enter the second passage 211 through the spherical fuel element inlet 12 and are discharged from the second spherical fuel element outlet 132.

[0034] It should be noted that Figure 1 and Figure 2 The gas inlet 14 shown in the figure is located on the left side of the box-type main body 10. The figure is only an example. The gas inlet 14 can also be set on the right side of the box-type main body 10. The specific setting position is not specifically limited.

[0035] The spherical fuel element path conversion device disclosed in the embodiment of the present application uses pneumatic principles to push the piston body 20 to move left and right to achieve the conversion of the spherical fuel element channel path, and can realize the rapid switching of different spherical fuel element outlets 13. Compared with existing devices, it omits components such as motors, magnetic drives, and bearings, and has a simple structure and is easy to implement.

[0036] Furthermore, the spherical fuel element inlet 12, the spherical fuel element outlet 13 and the gas inlet 14 are all connecting pipes, which are respectively connected to the box-type main body 10, preferably by welding. The box-type main body 10 is provided with openings corresponding to the spherical fuel element inlet 12, the spherical fuel element outlet 13 and the gas inlet 14.

[0037] Furthermore, the box-type body 10 may include two gas inlets 14, one on each of the left and right sides of the box-type body 10. By inflating the left and right sides of the piston body 20 with gas via the inflation and deflation assembly, the path of the spherical fuel element can be switched. The following description will take the example of a case where only one gas inlet 14 is provided.

[0038] Furthermore, in order to play a buffering role, in some specific embodiments, the piston body 20 is provided with a communication hole 22 that communicates with the channel 21, and the communication hole 22 is connected to the accommodating chamber 11. Preferably, the communication hole 22 is provided at the end of the piston body 20 away from the gas inlet 14. When the inflatable component fills the accommodating chamber 11 with gas and the piston body 20 moves toward the end away from the gas inlet 14, as shown in FIG. Figure 1 and Figure 2 As shown in FIG, during the rightward movement of the piston body 20, the gas on the right side of the piston body 20 enters the first channel 211 through the connecting hole 22, playing a certain buffering role and reducing the vibration of the piston body 20 during the reciprocating movement.

[0039] Furthermore, in order to position the piston body 20 along the movement of the box-type main body 10, a positioning structure 30 is provided between the box-type main body 10 and the piston body 20. When the piston body 20 moves to a preset position, the positioning structure 30 can lock the piston body 20 and the box-type main body 10 so that the corresponding channel 21 is connected to the corresponding spherical fuel element outlet 13. The positioning structure 30 includes at least one of a spring-top ball structure 31, a magnetic positioning structure, or a snap-on positioning structure. In some specific embodiments, a permanent magnet can be provided on one of the piston body 20 and the box-type main body 10, and a ferromagnetic material can be provided at a preset position on the other. During the movement of the piston body 20, when the permanent magnet and the ferromagnetic material approach each other, they can attract each other to position the piston body 20 when it moves to the preset position.

[0040] Furthermore, in some specific embodiments, Figure 3As shown, the positioning structure 30 includes a spring ball structure 31 , which is provided on one of the box-type main body 10 and the piston body 20 , and the other is provided with a positioning hole 32 that can cooperate with the spring ball structure 31 .

[0041] In some specific embodiments, Figure 3 As shown, a spring-to-ball structure 31 is provided on the piston body 20, and a positioning hole 32 is provided on the box-type main body 10. Along the movement path of the piston body 20, the positioning holes 32 include multiple ones corresponding to the outlets 13 of the spherical fuel elements. Specifically, the piston body 20 is provided with a groove, and the spring-to-ball structure 31 includes a spring 311 and a ball 312 disposed within the groove. One end of the spring 311 is connected to the wall of the groove, and the other end is connected to or abuts the ball 312. A portion of the ball 312 is exposed outside the mounting groove. When the spring 311 abuts the ball 312, the ball 312 can rotate freely. Preferably, the diameter of the ball 312 is larger than the diameter of the positioning hole 32. When the piston body 20 moves, the spring 311 is compressed, allowing the ball 312 to enter the positioning hole 32, thereby ensuring normal movement of the piston body 20. When the ball 312 contacts the positioning hole 32 , the ball 312 is inserted into the positioning hole 32 , thereby achieving the positioning of the box-type main body 10 and the piston body 20 .

[0042] Preferably, spring ball structures 31 are provided on both the upper and lower surfaces where the piston body 20 contacts the box-type main body 10. Positioning holes 32 are provided on the contact surface between the box-type main body 10 and the piston body 20, cooperating with the spring ball structures 31. Along the movement path of the piston body 20, the positioning holes 32 include multiple positioning holes 32 corresponding to the spherical fuel element outlets 13. When the piston body 20 moves left and right under the propulsion of gas, the spring ball structures 31 cooperate with the corresponding positioning holes 32 to achieve positioning of the piston body 20. It should be noted that the spring 311 can be an ordinary steel spring or a magnetic spring, and the specific type is not specifically limited.

[0043] When the spherical fuel element needs to be discharged from the first spherical fuel element outlet 131, the gas filling and discharging assembly is used to discharge the gas into the accommodating cavity 11 ( Figure 2 The left side of the piston body 20 shown in FIG is inflated with gas, preferably helium, and the piston body 20 is pushed to the right until the ball 312 is stuck in the corresponding positioning hole 32. At this time, the spherical fuel element enters the first channel 212 from the spherical fuel element inlet 12 and is discharged from the first spherical fuel element outlet 131. When the spherical fuel element needs to be discharged from the second spherical fuel element outlet 132, the gas filling and discharging assembly is used to fill the accommodating chamber 11 ( Figure 2 The gas on the left side of the piston body 20 is extracted, and the piston body 20 moves to the left under the action of the pressure difference until the ball 312 is stuck in the corresponding positioning hole 32, as shown in FIG. Figure 1As shown, at this time, the spherical fuel element enters the second channel 211 from the spherical fuel element inlet 12 and is discharged from the second spherical fuel element outlet 132.

[0044] Furthermore, in some specific embodiments, the ball 312 is a magnetic steel ball, and a magnetic conductive material capable of attracting the ball 312 is provided in the positioning hole 32, so that the piston body 20 and the box-type main body 10 are positioned by magnetic adsorption.

[0045] Furthermore, in some specific embodiments, in order to provide a guiding effect for the ball 312 to escape from the positioning hole 32 , a guiding slope is provided at the edge of the positioning hole 32 .

[0046] Furthermore, in some specific embodiments, the positioning structure 30 includes an elastic buckle and a slot that cooperates with the elastic buckle, one of which is provided on the box-type body 10, and the other is provided on the piston body 20. Specifically, the buckle includes a buckle body and an elastic return member connected to the buckle body; and / or the slot is provided with a guiding inclined surface.

[0047] Furthermore, in order to prevent the gas on the left and right sides of the piston body 20 from mixing in the accommodating chamber 11, as shown in FIG. Figure 1 and Figure 2 As shown, a sealing structure 40 is provided between the piston body 20 and the box-type main body 10 . Specifically, the sealing structure 40 includes sealing rings 41 provided at both ends of the piston body 20 .

[0048] In order to further improve the sealing performance, such as Figure 1 As shown, the sealing structure 40 further includes a sleeve 42 , which is disposed on the box-type body 10 . Preferably, the sleeve 42 is disposed on one end of the box-type body 10 where the gas inlet 14 is disposed. Preferably, the inner diameter of the sleeve 42 is slightly smaller than the outer diameter of the sealing ring 41 .

[0049] Furthermore, the box-type main body 10 includes a shell 101 and a flange plate 102 connected to the shell 101. The shell 101 and the flange plate 102 are detachably connected, preferably by flange connection. The detachable connection method facilitates disassembly, assembly, inspection and maintenance. The box-type main body 10 is preferably made of a material that can withstand pressure.

[0050] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0051] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0052] In the description of the embodiments of the present application, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0053] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0054] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A spherical fuel element path conversion device, characterized in that: include: A box-type main body (10), the box-type main body (10) having a receiving cavity (11), the box-type main body (10) being provided with a spherical fuel element inlet (12), a spherical fuel element outlet (13), and a gas inlet (14) communicating with the receiving cavity (11), the number of the spherical fuel element outlets (13) comprising at least two, and the gas inlet (14) being connected to a gas charging and discharging assembly; A piston body (20) is movably disposed in the accommodating cavity (11). A plurality of channels (21) are provided on the piston body (20). The channels (21) correspond one-to-one with the spherical fuel element outlets (13). By changing the position of the piston body (20), each of the channels (21) can communicate with the spherical fuel element inlet (12) and the corresponding spherical fuel element outlet (13).

2. The spherical fuel element path conversion device according to claim 1, characterized in that: The piston body (20) is provided with a communication hole (22) communicating with the channel (21), the communication hole (22) being connected with the accommodating chamber (11), and the communication hole (22) is provided at an end of the piston body (20) away from the gas inlet (14).

3. The spherical fuel element path conversion device according to claim 2, characterized in that: A positioning structure (30) is provided between the box-type main body (10) and the piston body (20), and the positioning structure (30) comprises at least one of a spring ball structure (31), a magnetic positioning structure, or a snap-fit ​​positioning structure.

4. The spherical fuel element path conversion device according to claim 3, characterized in that: The positioning structure (30) includes a spring top ball structure (31), the spring top ball structure (31) is arranged on one of the box-type main body (10) and the piston body (20), and the other is provided with a positioning hole (32) that cooperates with the spring top ball structure (31).

5. The spherical fuel element path conversion device according to claim 4, characterized in that: The spring ball structure (31) is provided on the piston body (20), and the positioning hole (32) is provided on the box-type main body (10). Along the moving path of the piston body (20), the positioning holes (32) include a plurality of holes corresponding to the spherical fuel element outlets (13); A groove is provided on the piston body (20), and the spring-ball structure (31) includes a spring (311) and a ball (312) provided in the groove and connected or abutted against each other.

6. The spherical fuel element path conversion device according to claim 4, characterized in that: The edge of the positioning hole (32) is provided with a guiding slope.

7. The spherical fuel element path conversion device according to claim 3, characterized in that: The positioning structure (30) comprises an elastic buckle and a slot cooperating with the elastic buckle, one of the elastic buckle and the slot is arranged on the box-type main body (10), and the other is arranged on the piston body (20).

8. The spherical fuel element path conversion device according to claim 1, characterized in that: A sealing structure (40) is provided between the piston body (20) and the box-type main body (10), and the sealing structure (40) comprises sealing rings (41) provided at both ends of the piston body (20).

9. The spherical fuel element path conversion device according to claim 8, wherein the sealing structure (40) further comprises a sleeve (42), and the sleeve (42) is provided on the box-type main body (10).

10. The spherical fuel element path conversion device according to any one of claims 1 to 9, characterized in that: The box-type main body (10) comprises a shell (101) and a flange plate (102) connected to the shell (101), and the shell (101) and the flange plate (102) are detachably connected.

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