Pebble bed high temperature reactor material handling device and pebble bed high temperature reactor material handling method

Abstract

The present invention provides a pebble bed high temperature pile reclaiming device and a pebble bed high temperature pile reclaiming method. The pebble bed high temperature pile reclaiming device of the present invention comprises: a reclaiming assembly, the reclaiming assembly comprising a negative pressure blower and a reclaiming pipe, the reclaiming pipe having a connection port and a reclaiming port, the air outlet of the negative pressure blower being connected to the connection port, the reclaiming pipe being movable relative to the negative pressure blower, the reclaiming port being adapted to communicate with the feed port of the pebble bed high temperature pile to remove fuel balls stuck in the pebble bed high temperature pile; and a crushing assembly, the reclaiming assembly comprising a driving device and a crushing rod, the crushing rod extending in a first direction, the driving device being capable of driving the crushing rod to move in the first direction so that the crushing rod has an initial position and a crushing position. In the crushing position, the crushing rod extends into the feed port of the pebble bed high temperature pile to crush fuel balls stuck in the pebble bed high temperature pile. Therefore, the pebble bed high temperature pile reclaiming device according to the present invention has the advantages of facilitating the removal of stuck fuel balls and improving the safety of maintenance personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor engineering, in particular to a kind of ball bed type high temperature reactor and ball bed type high temperature reactor material taking method. BACKGROUND

[0002] Ball bed type high temperature gas cooled reactor is an advanced nuclear reactor with good inherent safety, which can be used for high-efficiency power generation and high-temperature heat supply, and is one of the preferred reactor types in the fourth generation nuclear energy system in the international nuclear energy field. By utilizing the favorable geometry of spherical fuel elements, the ball bed type high temperature gas cooled reactor can realize the non-stop reactor refueling function. The fuel handling system is a key system for realizing the long-term safe and stable operation of the high temperature gas cooled reactor, which mainly uses gravity and pneumatic methods to transport and handle fuel elements. To improve the transport efficiency of fuel elements, the inner diameter of the fuel handling system ball flow transmission channel is very close to the outer diameter of the fuel ball. Under the harsh operating environment of the near-equal-diameter ball flow transmission channel and the high-frequency operation condition of the ball flow transmission equipment, due to equipment action deviation or debris accumulation, etc., the ball flow transmission equipment inside the fuel handling system or the small-inclination ball flow transmission pipeline is prone to ball jamming failure. In the related art, once the ball flow transmission equipment of the fuel handling system fails, the jammed fuel ball can only be removed by disassembling the equipment or the material taking port pipe, and the maintenance efficiency is low, and the maintenance personnel need to bear a lot of radioactive risk in the high radiation environment. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a kind of ball bed type high temperature reactor and ball bed type high temperature reactor material taking method.

[0004] The ball bed type high temperature reactor material taking device of the embodiments of the present application comprises:

[0005] A material taking assembly, the material taking assembly comprises a negative pressure fan and a material taking pipe, the material taking pipe has a connecting port and a material taking port, the suction port of the negative pressure fan is connected with the connecting port, the material taking pipe is movable relative to the negative pressure fan, and the material taking port is adapted to communicate with the feed port of the ball bed type high temperature reactor so as to take out the jammed fuel ball in the ball bed type high temperature reactor;

[0006] A material breaking assembly, the material taking assembly comprises a driving device and a ball breaking rod, the ball breaking rod extends in a first direction, the driving device can drive the ball breaking rod to move in the first direction so that the ball breaking rod has an initial position and a ball breaking position, in the ball breaking position, the ball breaking rod extends into the feed port of the ball bed type high temperature reactor so as to crush the jammed fuel ball in the ball bed type high temperature reactor.

[0007] Therefore, the ball bed type high temperature reactor material taking device according to the embodiments of the present application has the advantages of facilitating the taking out of the jammed fuel ball and improving the safety of the maintenance personnel.

[0008] The material taking device of the pebble bed type high temperature reactor according to the embodiments of the present application comprises a material taking frame and a moving device, the moving device, the material taking pipe and the driving device are all arranged on the material taking frame, the moving device can drive the material taking pipe to move so that the material taking port is communicated with the feeding port of the pebble bed type high temperature reactor.

[0009] In some embodiments, the material taking pipe comprises a first pipe and a second pipe, the first pipe extends along the up-down direction, the first pipe has a first pipe port and a second pipe port, the first pipe port is located below the second pipe port, the first pipe port constitutes the material taking port, the second pipe has a third pipe port and a fourth pipe port, the third pipe port is communicated with the first pipe, and the fourth pipe port constitutes the connecting port.

[0010] The moving device can drive the material taking pipe to move downward so that the material taking port is communicated with the feeding port of the pebble bed type high temperature reactor, the first direction is the up-down direction, the extending direction of the broken ball rod is the up-down direction, the broken ball rod is located above the first pipe, the driving device can drive the broken ball rod to move along the up-down direction so that the broken ball rod has the initial position and the broken ball position, the broken ball position is located below the initial position, in the broken ball position, the broken ball rod penetrates through the first pipe and extends into the feeding port of the pebble bed type high temperature reactor so as to crush the jammed fuel balls in the pebble bed type high temperature reactor.

[0011] In some embodiments, the driving device comprises a first driving motor and a worm gear transmission, the first driving motor and the worm gear transmission are both arranged on the material taking frame, the output shaft of the driving motor is connected with the worm gear transmission, and the worm gear transmission is in screw transmission with the broken ball rod so as to drive the broken ball rod to move along the up-down direction.

[0012] Alternatively, the driving device comprises a first telescopic cylinder, the cylinder body of the first telescopic cylinder is arranged on the material taking frame, the telescopic part of the first telescopic cylinder is movable along the up-down direction, and the telescopic part of the first telescopic cylinder is connected with the broken ball rod so as to drive the broken ball rod to move along the up-down direction.

[0013] In some embodiments, the moving device comprises a second driving motor, a lead screw and a moving frame, the moving frame is movably arranged on the material taking frame along the up-down direction, the material taking pipe is arranged on the moving frame, the length direction of the lead screw is the up-down direction, the lead screw is rotatably arranged on the material taking frame, the lead screw is in screw transmission with the moving frame, and the second driving motor is arranged on the material taking frame and connected with the lead screw so as to drive the lead screw to rotate on the material taking frame.

[0014] In some embodiments, the material taking frame is provided with a plurality of guide columns, the guide columns extend in the up-down direction, and the moving frame is movably arranged on the guide columns in the up-down direction.

[0015] In some embodiments, the second pipe opening of the first pipe is provided with an isolation valve for controlling the opening and closing thereof.

[0016] In some embodiments, the material taking assembly further comprises a protective cover, the protective cover is arranged on the material taking frame, the opening of the protective cover faces the lower side, the protective cover has a preset size in the up-down direction, and at least a part of the broken ball rod is located in the protective cover.

[0017] The application further provides a material taking method for a pebble bed type high temperature reactor, comprising the material taking device for the pebble bed type high temperature reactor, and the material taking method for the pebble bed type high temperature reactor comprises the following steps:

[0018] The material taking opening of the material taking pipe is communicated with the feeding opening of the pebble bed type high temperature reactor, and the negative pressure fan is turned on so as to suck out the fuel balls blocked in the pebble bed type high temperature reactor.

[0019] And / or, the broken ball rod is inserted into the feeding opening of the pebble bed type high temperature reactor, the fuel balls blocked in the pebble bed type high temperature reactor are broken, the material taking opening of the material taking pipe is communicated with the feeding opening of the pebble bed type high temperature reactor, and the negative pressure fan is turned on so as to suck out the fuel balls blocked in the pebble bed type high temperature reactor.

[0020] In some embodiments, the material taking device for the pebble bed type high temperature reactor is the material taking device for the pebble bed type high temperature reactor described above.

[0021] The material taking method for the pebble bed type high temperature reactor further comprises the following steps: the material taking device for the pebble bed type high temperature reactor is arranged above the feeding opening of the pebble bed type high temperature reactor, and the first pipe of the material taking device for the pebble bed type high temperature reactor is oppositely arranged with the feeding opening of the pebble bed type high temperature reactor in the up-down direction. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a perspective view of a material taking device for a pebble bed type high temperature reactor according to an embodiment of the application.

[0023] Figure 2 FIG. 2 is a front view of the material taking device for the pebble bed type high temperature reactor according to the embodiment of the application.

[0024] Figure 3 FIG. 3 is a perspective view of a material taking assembly and a broken material assembly according to an embodiment of the application.

[0025] Figure 4 FIG. 4 is a front view of the material taking assembly and the broken material assembly according to the embodiment of the application.

[0026] REFERENCE SIGNS:

[0027] The ball bed type high temperature reactor material taking device 100, a material taking pipe 1, a connecting port 2, a material taking port 3, a ball breaking rod 4, a material taking frame 5, a first pipe 6, a second pipe 7, a first driving motor 8, a worm gear transmission 9, a second driving motor 10, a screw rod 11, a moving frame 12, a guide column 13, an isolation valve 14, and a protective cover 15. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below with reference to examples shown in the attached drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0029] A ball bed type high temperature reactor material taking device 100 according to an embodiment of the present application is described below with reference to the drawings. As shown in Figures 1 to 4 The ball bed type high temperature reactor material taking device 100 according to the embodiment of the present application includes a material taking assembly and a ball breaking assembly.

[0030] The material taking assembly includes a negative pressure fan and a material taking pipe 1 having a connecting port 2 and a material taking port 3, and the suction port of the negative pressure fan is connected to the connecting port 2. The material taking pipe 1 is movable relative to the negative pressure fan, and the material taking port 3 is adapted to communicate with the feeding port of the ball bed type high temperature reactor to take out the fuel balls jammed in the ball bed type high temperature reactor.

[0031] The material taking assembly includes a driving device and a ball breaking rod 4 extending in a first direction, and the driving device can drive the ball breaking rod 4 to move in the first direction so that the ball breaking rod 4 has an initial position and a ball breaking position. In the ball breaking position, the ball breaking rod 4 extends into the feeding port of the ball bed type high temperature reactor to break the fuel balls jammed in the ball bed type high temperature reactor.

[0032] In the related art, once the ball flow transmission equipment of the fuel loading and unloading system fails due to jamming, the jammed fuel balls can only be taken out through disassembly of the equipment or the material taking port pipe, and the maintenance efficiency is low, and the maintenance personnel need to bear a large radioactive risk in the strong radiation environment.

[0033] According to an embodiment of the present invention, the pebble bed type high temperature pile reclaiming device 100 is provided with a reclaiming assembly and a crushing assembly. When there are fuel balls stuck in the pebble bed type high temperature pile (fuel loading and unloading system ball flow transmission equipment), the reclaiming port 3 of the reclaiming pipe 1 can be connected to the feed port of the pebble bed type high temperature pile (fuel loading and unloading system ball flow transmission equipment), and then the negative pressure blower is turned on, so that the negative pressure blower and the reclaiming pipe 1 cooperate to suck out (remove) the fuel balls stuck in the pebble bed type high temperature pile. If the negative pressure blower cannot suck out the fuel balls stuck in the pebble bed type high temperature pile, the ball crushing rod 4 can be moved to the ball crushing position so that the ball crushing rod 4 extends into the feed port of the pebble bed type high temperature pile to crush the fuel balls stuck in the pebble bed type high temperature pile, and then the reclaiming port 3 of the reclaiming pipe 1 is connected to the feed port of the pebble bed type high temperature pile and the negative pressure blower is turned on, so that the negative pressure blower and the reclaiming pipe 1 cooperate to suck out the crushed fuel balls in the pebble bed type high temperature pile. Compared with the related art in which the jammed fuel balls are removed by disassembling equipment or taking-out pipe fittings, the pebble bed high-temperature pile reclaiming device 100 according to the embodiment of the present invention is provided with a reclaiming assembly and a crushing assembly, which makes it more convenient and quick to remove the jammed fuel balls and improves the safety of maintenance personnel.

[0034] Therefore, the pebble bed type high temperature pile-reclaiming device 100 according to the embodiment of the present invention has the advantages of facilitating the removal of stuck fuel balls and improving the safety of maintenance personnel.

[0035] like Figures 1 to 4 As shown, the pebble bed type high temperature pile reclaiming device 100 according to an embodiment of the present invention includes a reclaiming assembly, a crushing assembly, a reclaiming frame 5 and a moving device.

[0036] The material taking rack 5 includes a plurality of connecting plates with thickness in the vertical direction and connecting rods extending in the vertical direction. The plurality of connecting plates and the plurality of connecting rods are connected. A baffle (not shown in the figure) is provided on the outside of the material taking rack 5. The plurality of connecting plates and the plurality of connecting rods define an installation cavity with the baffle. Figure 2 and Figure 4 As shown by the arrow in .

[0037] The reclaim assembly includes a negative pressure blower and a reclaim pipe 1. Reclaim pipe 1 has a connection port 2 and a reclaim port 3. The suction port of the negative pressure blower is connected to the connection port 2. Reclaim pipe 1 is movable relative to the negative pressure blower. Reclaim port 3 is adapted to communicate with the feed port of the pebble bed reactor to facilitate the removal of stuck fuel spheres within the reactor.

[0038] Specifically, the moving device and the material taking pipe 1 are both arranged on the material taking frame 5. The moving device can drive the material taking pipe 1 to move so that the material taking port 3 is connected with the feed port of the pebble bed type high temperature reactor, thereby sucking out the stuck fuel balls.

[0039] In some embodiments, the fuel-removing tube 1 comprises a first tube 6 and a second tube 7. The first tube 6 extends in the up-down direction, and the first tube 6 has a first tube opening and a second tube opening, the first tube opening is below the second tube opening, i.e. the first tube opening is the lower tube opening of the first tube 6, and the second tube opening is the upper tube opening of the first tube 6. The first tube opening constitutes the fuel-removing opening 3, and the fuel-removing opening 3 is provided with an annular stepped groove on the outer periphery side, so that the fuel-removing opening 3 can be easily inserted into the fuel inlet of the bed-type high-temperature reactor, and the fuel-removing opening 3 and the fuel inlet of the bed-type high-temperature reactor are not easy to leak air, thereby facilitating the fuel-removing tube 1 to suck out the blocked fuel balls.

[0040] The second tube 7 has a third tube opening and a fourth tube opening, the third tube opening is communicated with the first tube 6, and the fourth tube opening constitutes the connecting opening 2. Specifically, the third tube opening is located between the first tube opening and the second tube opening in the up-down direction, and the third tube opening is communicated with the first tube 6, so that the suction opening of the negative pressure fan is communicated with the first tube 6 through the second tube 7, so that the fuel balls can pass through the first tube 6 and the second tube 7 in turn, and then be transported to the external shielding tank for storage.

[0041] The moving device can drive the fuel-removing tube 1 to move downward so that the fuel-removing opening 3 is communicated with the fuel inlet of the bed-type high-temperature reactor. Specifically, the bed-type high-temperature reactor uses gravity feeding, and the fuel inlet of the bed-type high-temperature reactor faces upward, and the fuel-removing tube 1 is arranged above the fuel inlet of the bed-type high-temperature reactor. Therefore, when the moving device drives the fuel-removing tube 1 to move downward to the preset position, the fuel-removing opening 3 can be communicated with the fuel inlet of the bed-type high-temperature reactor.

[0042] In some embodiments, the moving device comprises a second driving motor 10, a lead screw 11 and a moving frame 12. The moving frame 12 is movably arranged on the fuel-removing frame 5 in the up-down direction, the fuel-removing tube 1 is arranged on the moving frame 12, the length direction of the lead screw 11 is the up-down direction, the lead screw 11 is rotatably arranged on the fuel-removing frame 5, and the lead screw 11 is in screw transmission with the moving frame 12. The second driving motor 10 is arranged on the fuel-removing frame 5, and the second driving motor 10 is connected with the lead screw 11 to drive the lead screw 11 to rotate on the fuel-removing frame 5.

[0043] Specifically, the movable frame 12 is hollow designed to reduce the mass, the movable frame 12 is arranged in the mounting cavity in the material taking frame 5, and the movable frame 12 is slidable on the material taking frame 5 in the up-down direction. The first pipe 6 is arranged on the movable frame 12, and the up-down ends of the lead screw 11 are rotationally connected to the material taking frame 5, the lead screw 11 is arranged in the mounting cavity, the movable frame 12 is arranged on the outer circumferential side of the lead screw 11 and is in threaded transmission with the lead screw 11. The second driving motor 10 is arranged on the top of the material taking frame 5, the output shaft of the second driving motor 10 is coaxially arranged with the lead screw 11 (both extend in the up-down direction), and the output shaft of the second driving motor 10 is connected with the lead screw 11 through a speed reducer to drive the lead screw 11 to rotate on the material taking frame 5, so that the movable frame 12 can move in the up-down direction, and the material taking pipe 1 can be driven to move in the up-down direction, so that the material taking pipe 1 moves downward and the material taking opening 3 communicates with the feed opening of the pebble bed high temperature reactor.

[0044] In some embodiments, a plurality of guide columns 13 are arranged on the material taking frame 5, the guide columns 13 extend in the up-down direction, and the movable frame 12 is movably arranged on the plurality of guide columns 13 in the up-down direction. Specifically, the lead screw 11 and the guide columns 13 are arranged in the horizontal direction, the plurality of guide columns 13 are arranged in the mounting cavity, and the movable frame 12 is arranged on the outer circumferential side of the guide columns 13 and is in sliding connection with the guide columns 13, so that the movable frame 12 moves more stably in the up-down direction. For example, the guide columns 13 are two, the lead screw 11 and the two guide columns 13 are arranged in the left-right direction, and the left-right direction is indicated by the arrow in Figure 2 and Figure 4 .

[0045] In some embodiments, a second telescopic cylinder is arranged on the material taking frame 5, the cylinder body of the second telescopic cylinder is arranged on the material taking frame 5, the telescopic part of the second telescopic cylinder is movable in the up-down direction, and the telescopic part of the second telescopic cylinder is connected with the material taking pipe 1 (the first pipe 6) to drive the material taking pipe 1 to move in the up-down direction.

[0046] As shown in Figures 1 to 4As shown, the taking-out assembly comprises a driving device and a ball breaking rod 4 extending in a first direction, the driving device can drive the ball breaking rod 4 to move in the first direction so that the ball breaking rod 4 has an initial position and a ball breaking position. In the ball breaking position, the ball breaking rod 4 extends into the feed port of the pebble bed high temperature reactor to break the clogged fuel balls in the pebble bed high temperature reactor. Specifically, the driving device is arranged on the taking-out frame 5, the first direction is the up-down direction, and the extending direction of the ball breaking rod 4 is the up-down direction. The ball breaking rod 4 is located (positively) above the first pipe 6, and the driving device can drive the ball breaking rod 4 to move in the up-down direction so that the ball breaking rod 4 has the initial position and the ball breaking position, the ball breaking position is below the initial position, and in the ball breaking position, the ball breaking rod 4 penetrates through the first pipe 6 and extends into the feed port of the pebble bed high temperature reactor to break the clogged fuel balls in the pebble bed high temperature reactor. That is, the driving device can drive the ball breaking rod 4 to move downward to a preset position (extending into the feed port of the pebble bed high temperature reactor) to break the clogged fuel balls in the pebble bed high temperature reactor.

[0047] In some embodiments, the second pipe opening of the first pipe 6 is provided with an isolation valve 14 for controlling the opening and closing thereof. Thus, when the taking-out assembly cannot suck out the clogged fuel balls, the isolation valve 14 can be opened, so that the second pipe opening (upper pipe opening) of the first pipe 6 is opened, so that the ball breaking rod 4 can move downward, so that the ball breaking rod 4 penetrates through the first pipe 6 and extends into the feed port of the pebble bed high temperature reactor to break the clogged fuel balls in the pebble bed high temperature reactor.

[0048] In some embodiments, the taking-out assembly further comprises a protective cover 15 arranged on the taking-out frame 5, the opening of the protective cover 15 faces the lower side, the protective cover 15 has a preset size in the up-down direction, and at least a part of the ball breaking rod 4 is located in the protective cover 15. Specifically, the protective cover 15 is a columnar cover body extending in the up-down direction, and the upper part of the ball breaking rod 4 is located in the protective cover, so that the protective cover 15 can prevent the ball breaking rod 4 from being damaged.

[0049] In some embodiments, the opening at the bottom of the protective cover 15 is connected with the second pipe opening of the first pipe 6, that is, the protective cover 15 is integrally formed with the first pipe 6.

[0050] In some embodiments, the driving device comprises a first driving motor 8 and a worm gear transmission 9, both of which are arranged on the taking-out frame 5, the output shaft of the driving motor is connected with the worm gear transmission, and the worm gear transmission is in screw transmission with the ball breaking rod 4 to drive the ball breaking rod 4 to move in the up-down direction. For example, the axial direction of the output shaft of the first driving motor 8 is the left-right direction, the worm gear transmission 9 comprises a worm and a helical gear, the worm is coaxially arranged with and connected with the output shaft of the first driving motor 8, and the helical teeth on the worm are in meshing connection with the tooth surface of the helical gear. The ball breaking rod 4 is externally sleeved on the nut in screw transmission with the ball breaking rod 4, and the helical gear is fixedly sleeved on the outside of the nut, so that the helical gear can drive the ball breaking rod 4 to move in the up-down direction when the helical gear rotates.

[0051] In some embodiments, the driving device comprises a first telescopic cylinder, a cylinder body of the first telescopic cylinder is arranged on the material taking frame 5, and a telescopic part of the first telescopic cylinder is movable in the up-down direction, and the telescopic part of the first telescopic rod is connected with the broken ball rod 4 so as to drive the broken ball rod 4 to move in the up-down direction.

[0052] The application further provides a ball bed type high temperature reactor material taking method, comprising the ball bed type high temperature reactor material taking device 100 according to the embodiments of the application, and the ball bed type high temperature reactor material taking method according to the embodiments of the application comprises the following steps:

[0053] The material taking port 3 of the material taking pipe 1 is communicated with the feeding port of the ball bed type high temperature reactor, and the negative pressure fan is started to suck out the fuel balls blocked in the ball bed type high temperature reactor.

[0054] And / or, the broken ball rod 4 is inserted into the feeding port of the ball bed type high temperature reactor to crush the fuel balls blocked in the ball bed type high temperature reactor, then the material taking port 3 of the material taking pipe 1 is communicated with the feeding port of the ball bed type high temperature reactor, and the negative pressure fan is started to suck out the fuel balls blocked in the ball bed type high temperature reactor.

[0055] That is, the ball bed type high temperature reactor material taking method according to the embodiments of the application comprises the steps of communicating the material taking port 3 of the material taking pipe 1 with the feeding port of the ball bed type high temperature reactor and starting the negative pressure fan to suck out the fuel balls. Alternatively, after the fuel balls cannot be directly sucked out, the blocked fuel balls are crushed by the broken ball rod 4, and then the crushed fuel balls are sucked out. Alternatively, the blocked fuel balls are directly crushed by the broken ball rod 4, and then the crushed fuel balls are sucked out.

[0056] In some embodiments, the ball bed type high temperature reactor material taking device 100 is arranged above the feeding port of the ball bed type high temperature reactor, and the first pipe 6 of the ball bed type high temperature reactor material taking device 100 is arranged opposite to the feeding port of the ball bed type high temperature reactor in the up-down direction. Thus, the material taking pipe 1 can be conveniently moved downward to be communicated with the feeding port of the ball bed type high temperature reactor.

[0057] Specifically, in the initial state, the material taking pipe 1 is in the upper limit position; when the fuel balls are blocked, the system is depressurized, and the material taking operation condition is met; the material taking pipe 1 is moved downward to be communicated with the feeding port of the ball bed type high temperature reactor, the isolation valve 14 below the broken ball rod 4 is in the closed state, the external negative pressure fan is started, the blocked fuel balls are sucked out through the material taking pipe 1 and transported to the external shielding tank through the ball outlet channel for storage.

[0058] If the fuel ball cannot be smoothly taken out after multiple operations, the outer negative pressure fan is closed, the isolation valve 14 under the broken ball rod 4 is opened, the broken ball rod 4 is driven to move downward, and the fuel ball is crushed when the broken ball rod 4 passes through the first pipe 6 to reach the position of the blocked fuel ball. After the fuel ball is crushed, the broken ball rod 4 moves upward to the initial position; then the isolation valve 14 is closed, and the negative pressure fan is started to suck until all the broken balls are sucked out.

[0059] After the blocked fuel ball is sucked out, the material taking pipe 1 moves upward to restore the initial state, the fault is removed, and the system returns to normal operation.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0062] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0064] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. are used herein merely as identifiers for different elements, regions, or layers, and are not intended to be taken literally, unless otherwise specified.

[0065] Although the above-mentioned embodiments have been shown and described, it is to be understood that these embodiments are exemplary only, and are not to be taken as limiting the scope of the present application, and that changes, modifications, substitutions and variations can be made to the above-mentioned embodiments by those skilled in the art without departing from the scope of the present application.

Claims

1. A pebble bed high temperature stacking and reclaiming device, characterized in that: include: A material taking assembly, the material taking assembly includes a negative pressure fan and a material taking pipe, the material taking pipe has a connecting port and a material taking port, the exhaust port of the negative pressure fan is connected to the connecting port, the material taking pipe is movable relative to the negative pressure fan, the material taking port is suitable for communicating with the feed port of the pebble bed type high temperature reactor so as to remove fuel balls stuck in the pebble bed type high temperature reactor, the material taking pipe includes a first pipe and a second pipe, the first pipe extends in the up-down direction, the first pipe has a first pipe opening and a second pipe opening, the first pipe opening is located below the second pipe opening, the first pipe opening constitutes the material taking port, the second pipe has a third pipe opening and a fourth pipe opening, the third pipe opening is communicated with the first pipe, and the fourth pipe opening constitutes the connecting port; A crushing assembly, comprising a driving device and a ball crushing bar, wherein the ball crushing bar extends in an up-down direction and is located above the first tube. The driving device can drive the ball crushing bar to move in the up-down direction. The ball crushing bar has an initial position and a ball crushing position, wherein the ball crushing position is located below the initial position. In the ball crushing position, the ball crushing bar passes through the first tube and extends into the feed port of the pebble bed high-temperature reactor to crush fuel balls stuck in the pebble bed high-temperature reactor. The material taking frame and the moving device, the moving device, the material taking pipe and the driving device are all arranged on the material taking frame, and the moving device can drive the material taking pipe to move downward so that the material taking port is connected with the feed port of the pebble bed type high temperature reactor.

2. The pebble bed high temperature stacking and reclaiming device according to claim 1, characterized in that: The driving device includes a first driving motor and a worm gear transmission, both of which are arranged on the material reclaiming frame, the output shaft of the driving motor is connected to the worm gear transmission, and the worm gear transmission is driven by the ball crushing rod screw to drive the ball crushing rod to move in the up and down directions; Alternatively, the driving device includes a first telescopic cylinder, the cylinder body of the first telescopic cylinder is arranged on the material picking rack, the telescopic part of the first telescopic cylinder can move in the up and down directions, and the telescopic part of the first telescopic rod is connected to the ball crushing rod to drive the ball crushing rod to move in the up and down directions.

3. The pebble bed high temperature stacking and reclaiming device according to claim 2, characterized in that: The moving device includes a second drive motor, a screw rod and a moving frame. The moving frame is movably arranged on the material picking frame in the up and down directions. The material picking pipe is arranged on the moving frame. The length direction of the screw rod is the up and down direction. The screw rod is rotatably arranged on the material picking frame. The screw rod is transmitted to the screw rod of the moving frame. The second drive motor is arranged on the material picking frame. The second drive motor is connected to the screw rod so as to drive the screw rod to rotate on the material picking frame.

4. The pebble bed high temperature stacking and reclaiming device according to claim 3, characterized in that: The material taking rack is provided with a plurality of guide posts, and the extending direction of the guide posts is an up-down direction. The movable rack is movably provided on the plurality of guide posts along the up-down direction.

5. The pebble bed high temperature stacking and reclaiming device according to claim 1, characterized in that: The second pipe opening of the first pipe is provided with an isolation valve for controlling the opening and closing thereof.

6. The pebble bed high temperature stacking and reclaiming device according to claim 1, characterized in that: The material taking assembly also includes a protective cover, which is arranged on the material taking rack, with an opening of the protective cover facing downward. The protective cover has a preset size in the up and down directions, and at least a part of the ball breaking rod is located in the protective cover.

7. A pebble bed high temperature reclaiming method, characterized in that: The pebble bed high temperature stacking and reclaiming device comprises the pebble bed high temperature stacking and reclaiming device according to any one of claims 1 to 6, and the pebble bed high temperature stacking and reclaiming method comprises the following steps: Connecting the feed port of the feed pipe to the feed port of the pebble bed high temperature reactor, and turning on the negative pressure blower to suck out the fuel balls stuck in the pebble bed high temperature reactor; And / or, after the ball crushing rod is inserted into the feed port of the pebble bed type high temperature reactor to crush the fuel balls stuck in the pebble bed type high temperature reactor, the feed port of the feed pipe is connected to the feed port of the pebble bed type high temperature reactor, and the negative pressure fan is turned on to suck out the fuel balls stuck in the pebble bed type high temperature reactor.

8. The pebble bed high temperature reclaiming method according to claim 7, characterized in that: The pebble bed type high temperature stacking and reclaiming device is the pebble bed type high temperature stacking and reclaiming device according to any one of claims 1 to 6; The pebble bed high temperature pile reclaiming method further includes the following steps: arranging the pebble bed high temperature pile reclaiming device above the feed inlet of the pebble bed high temperature pile, wherein the first pipe of the pebble bed high temperature pile reclaiming device is arranged relative to the feed inlet of the pebble bed high temperature pile in the upper and lower directions.

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