阅读说明：本技术 用于球床式高温气冷堆的滑块式输球装置和方法 (Sliding block type ball conveying device and method for pebble bed type high-temperature gas cooled reactor ) 是由 雷伟俊 刘鹏 席京彬 李长峰 齐炳雪 张磊 战元平 赵肖冬 于 2021-06-01 设计创作，主要内容包括：本发明公开了一种用于球床式高温气冷堆的滑块式输球装置和方法,所述用于球床式高温气冷堆的滑块式输球装置包括箱体、进球孔、第一出球孔、第二出球孔、滑块通道、挡球通道、滑块、滑块驱动件、挡球件、挡球件驱动件、接球通道、第一出球管和第二出球管,挡球件驱动件能够驱动挡球件移动到第一出球孔的上端并阻止球形元件进入第一出球孔,当滑块位于第一位置时,接球通道连通进球孔和第一出球孔,当滑块位于第二位置时,接球通道连通第二出球孔。本发明提供的用于球床式高温气冷堆的滑块式输球装置和方法,无须反复拆装组件,能够有效降低核电站运行人员、检修人员的内照射和外照射辐照剂量。(The invention discloses a slider type ball conveying device and a method for a pebble-bed high-temperature gas-cooled reactor, wherein the slider type ball conveying device for the pebble-bed high-temperature gas-cooled reactor comprises a box body, a ball inlet hole, a first ball outlet hole, a second ball outlet hole, a slider channel, a ball blocking channel, a slider driving piece, a ball blocking piece driving piece, a ball receiving channel, a first ball outlet pipe and a second ball outlet pipe, wherein the ball blocking piece driving piece can drive the ball blocking piece to move to the upper end of the first ball outlet hole and prevent a spherical element from entering the first ball outlet hole, when the slider is positioned at a first position, the ball receiving channel is communicated with the ball inlet hole and the first ball outlet hole, and when the slider is positioned at a second position, the ball receiving channel is communicated with the second ball outlet hole. The slide block type ball conveying device and the method for the pebble bed type high-temperature gas cooled reactor do not need to repeatedly disassemble and assemble components, and can effectively reduce the internal irradiation dose and the external irradiation dose of nuclear power station operating personnel and maintenance personnel.)

1. The sliding block type ball conveying device for the pebble bed type high-temperature gas cooled reactor is characterized by comprising a box body (3), a ball inlet hole (2), a first ball outlet hole (8) and a second ball outlet hole (13) which are formed in the box body (3), a sliding block channel (18) and a ball blocking channel which are arranged in the box body (3), a sliding block (4), a sliding block driving piece (16) which drives the sliding block (4) to reciprocate between a first position and a second position in the sliding block channel (18), a ball blocking piece (7), a ball blocking piece driving piece (22) which drives the ball blocking piece (7) to reciprocate in the ball blocking channel, a ball receiving channel (24) which is formed in the sliding block (4), a first ball outlet pipe (9) and a second ball outlet pipe (12), wherein the lower end of the ball inlet hole (2) is communicated with the sliding block channel (18), and the upper ends of the first ball outlet hole (8) and the second ball outlet hole (13) are communicated with the sliding block channel (18), the upper end of first play bulb (9) with the lower extreme intercommunication in first play ball hole (8), the upper end of second play bulb (12) with the lower extreme intercommunication in second play ball hole (13), the lower extreme of second play bulb (12) with first play ball pipe (9) intercommunication, keep off the ball passageway with the upper end intercommunication in first play ball hole (8), keep off ball driving piece (22) and can drive keep off ball piece (7) and move to the upper end of first play ball hole (8) and prevent that spherical element (19) from entering first play ball hole (8), work as slider (4) are located the first position, ball receiving passageway (24) intercommunication advance ball hole (2) and first play ball hole (8), work as slider (4) are located the second position, ball receiving passageway (24) intercommunication second play ball hole (13).

2. The sliding block type ball conveying device for the pebble bed high-temperature gas-cooled reactor according to claim 1, wherein the ball blocking member (7) is a ball blocking plate, and the upper surface of the ball blocking member (7) is flush with the bottom surface of the sliding block passage (18).

3. The sliding block type ball conveying device for the pebble bed high temperature gas cooled reactor as claimed in claim 1, wherein the height of the ball receiving passage (24) is 1 to 2 mm larger than the diameter of the spherical element (19).

4. The sliding block type ball transportation device for the pebble bed high temperature gas cooled reactor as claimed in claim 1, wherein the diameter of the ball receiving passage (24) is 4 to 5 mm larger than the diameter of the spherical element (19).

5. The sliding block type ball conveying device for the pebble bed high-temperature gas cooled reactor as claimed in claim 1, wherein the ball inlet hole (2) and the first ball outlet hole (8) are coaxially arranged.

6. The sliding block type ball conveying device for the pebble bed high-temperature gas cooled reactor according to any one of claims 1 to 5, wherein a first limit pin (14) and a second limit pin (6) are further arranged in the sliding block channel (18), the first limit pin (14) and the second limit pin (6) are respectively arranged at the left end and the right end of the sliding block channel (18), when the sliding block (4) is located at the first position, the second limit pin (6) is in contact with the right end of the sliding block (4), and when the sliding block (4) is located at the second position, the first limit pin (14) is in contact with the left end of the sliding block (4).

7. The sliding block type ball conveying device for the pebble bed high temperature gas cooled reactor according to claim 6, wherein a guide is further provided in the sliding block passage (18), and the guide connects the sliding block passage (18) and the sliding block (4) when the sliding block (4) slides left and right in the sliding block passage (18).

8. The sliding block type ball conveying device for the pebble bed high-temperature gas-cooled reactor according to claim 7 is characterized in that a first end cover (17) and a second end cover (21) are fixedly installed on the box body (3), the right end face of the first end cover (17) forms the left side wall of the sliding block channel (18), and the front end face of the second end cover (21) forms the rear side wall of the ball blocking channel.

9. The sliding block type ball conveying device for the pebble bed high-temperature gas cooled reactor according to claim 1, wherein a ball inlet pipe (1) communicated with the upper end of the ball inlet hole (2) is fixedly installed at the upper side of the box body (3).

10. The sliding block type ball conveying method for the ball bed type high-temperature gas cooled reactor is characterized in that when balls are conveyed in series, a sliding block (4) is moved to a first position, a ball receiving channel (24) on the sliding block (4) is communicated with a ball inlet hole (2) and a first ball outlet hole (8) on a box body (3), and a plurality of spherical elements (19) can continuously penetrate through the ball inlet hole (2), the ball receiving channel (24) and the first ball outlet hole (8) and then enter a first ball outlet pipe (9);

when the ball is conveyed in a single way, the ball blocking piece (7) moves to the upper end of the first ball outlet hole (8) and prevents the spherical element (19) from entering the first ball outlet hole (8), and the slide block (4) repeatedly executes the ball-dribbling step; the dribbling step comprises the following steps: moving the slide block (4) to the first position, enabling one spherical element (19) in the ball inlet hole (2) to enter a ball receiving channel (24) of the slide block (4), moving the slide block (4) to the second position, enabling the ball receiving channel (24) to be communicated with a second ball outlet hole (13), and enabling the spherical element (19) in the ball receiving channel (24) to pass through the second ball outlet hole (13) and a second ball outlet pipe (12) and then enter the first ball outlet pipe (9).

Technical Field

The invention relates to the technical field of ball bed type high-temperature gas-cooled reactors, in particular to a sliding block type ball conveying device for a ball bed type high-temperature gas-cooled reactor and a sliding block type ball conveying method for the ball bed type high-temperature gas-cooled reactor.

Background

The pebble-bed high-temperature gas cooled reactor nuclear power plant (HTR-PM) has the characteristics of good safety, high potential economic competitiveness and the like, is a new generation of nuclear energy system, and meets the requirement of improving the economy. Exemplary engineering reactor cores for high temperature gas cooled reactor nuclear power plants contain different types of spherical elements during different phases of operation. The reactor core in the initial loading and transition cycle stages adopts two spherical elements of fuel spheres and graphite spheres; the reactor core is a spherical element of a fuel sphere in the normal operation stage; the reactor core is two spherical elements of fuel spheres and graphite spheres in the reloading stage after the reactor core is emptied; after the transition cycle is completed in the recharging stage, the reactor core is a spherical element of the fuel sphere.

Aiming at different operation stages, the spent fuel storage system corresponds to two operation working conditions. The first working condition is as follows: when the reactor core discharges the mixed spheres of the spent fuel spheres and the graphite spheres, the spent fuel storage needs to detect and identify the received graphite spheres and the spent fuel spheres and then classify and discharge the graphite spheres and the spent fuel spheres to the graphite sphere storage tank and the spent fuel storage tank for storage. The second working condition is as follows: when the reactor core only discharges the fuel spheres, the spent fuel storage system only needs to discharge the spent fuel spheres to the spent fuel storage tank for storage. For the first working condition, the spent fuel storage system needs a special device capable of performing the function of singularizing and conveying the spherical elements, and the spherical elements are conveyed to the detection equipment singly and one by one to perform the type identification and classification of the spherical elements, so that the graphite nodules and the spent fuel nodules are classified and stored. For the second condition, the spent fuel storage system needs a special device for executing the serial conveying function of the spherical elements so as to improve the storage efficiency. When a spent fuel storage system of a high-temperature gas cooled reactor nuclear power station demonstration project executes a first working condition, a spherical element single conveying device is installed in advance; and when the second working condition is executed, the ball-shaped element single conveying device is removed in advance and is converted into the straight pipe section. When the first condition is again performed, the ball element singulation conveyor is reinstalled.

In view of the fact that the transmission pipeline and equipment of the spent fuel storage system have extremely strong radioactivity, in order to reduce repeated disassembly and reassembly of the special device in different operation stages of the high temperature gas cooled reactor nuclear power plant, improve the availability of the system and the economic benefit of the power station, and reduce the internal irradiation dose and the external irradiation dose of the nuclear power plant operating personnel and the maintenance personnel, a special device which has a spherical element single conveying function and a spherical element serial conveying function is needed to be provided.

Disclosure of Invention

The invention aims to provide a slide block type ball conveying device for a pebble-bed high-temperature gas cooled reactor, which has a spherical element simplification conveying function and a serial conveying function, can effectively improve the availability of a system and the economic benefit of a power station, and reduces the internal irradiation dose and the external irradiation dose of nuclear power plant operating personnel and maintenance personnel.

In order to achieve the above object, the present invention provides a slide block type ball conveying device for pebble bed type high temperature gas cooled reactor, comprising a box body, a ball inlet hole, a first ball outlet hole and a second ball outlet hole which are arranged on the box body, a slide block channel and a ball blocking channel which are arranged in the box body, a slide block driving member which drives the slide block to reciprocate between a first position and a second position in the slide block channel, a ball blocking member driving member which drives the ball blocking member to reciprocate in the ball blocking channel, a ball receiving channel which is arranged on the slide block, a first ball outlet pipe and a second ball outlet pipe, wherein the lower end of the ball inlet hole is communicated with the slide block channel, the upper ends of the first ball outlet hole and the second ball outlet hole are both communicated with the slide block channel, the upper end of the first ball outlet pipe is communicated with the lower end of the first ball outlet hole, and the upper end of the second ball outlet pipe is communicated with the lower end of the second ball outlet hole, the lower extreme that the second goes out the bulb with first play bulb intercommunication, keep off the ball passageway with the upper end intercommunication in first play ball hole, keep off ball driving piece can drive keep off ball piece and remove to the upper end in first play ball hole and prevent spherical component and get into first play ball hole, work as when the slider is located the primary importance, connect the ball passageway intercommunication ball inlet and first play ball hole, work as when the slider is located the second place, connect the ball passageway intercommunication the second goes out the ball hole.

In a preferred embodiment, the ball blocking member is a ball blocking plate, and the upper surface of the ball blocking member is flush with the bottom surface of the slider channel.

In a preferred embodiment, the height of the ball-catching channel is 1-2 mm larger than the diameter of the spherical element.

In a preferred embodiment, the diameter of the ball-catching channel is 4-5 mm larger than the diameter of the ball-shaped element.

In a preferred embodiment, the ball inlet hole is arranged coaxially with the first ball outlet hole.

In a preferred embodiment, a first limit pin and a second limit pin are further disposed in the slider channel, the first limit pin and the second limit pin are respectively located at the left end and the right end of the slider channel, when the slider is located at the first position, the second limit pin contacts with the right end of the slider, and when the slider is located at the second position, the first limit pin contacts with the left end of the slider.

In a preferred embodiment, a guide member is further disposed in the slider channel, and the guide member guides and connects the slider channel and the slider when the slider slides left and right in the slider channel.

In a preferred embodiment, a first end cover and a second end cover are fixedly mounted on the box body, a right end face of the first end cover forms a left side wall of the slider channel, and a front end face of the second end cover forms a rear side wall of the ball blocking channel.

In a preferred embodiment, a ball inlet pipe communicated with the upper end of the ball inlet hole is fixedly installed on the upper side of the box body.

The difference between the sliding block type ball conveying device for the ball bed type high-temperature gas cooled reactor and the prior art is that the sliding block channel is arranged on the box body, the sliding block is driven by the sliding block driving piece to slide left and right in the sliding block channel, so that the ball inlet hole can be communicated with the first ball outlet hole through the ball receiving channel on the sliding block, and the spherical elements can be conveyed to the second ball outlet hole one by one through the matching of the ball receiving channel on the sliding block and the ball blocking piece, so that the single conveying function and the serial conveying function of the spherical elements can be realized. Specifically, when spherical elements need to be conveyed in series, the ball blocking piece driving piece drives the ball blocking piece to move away from the upper end of the first ball outlet hole, the first ball outlet hole is communicated, the sliding block driving piece drives the sliding block to move to the first position, the ball receiving channel is communicated with the ball inlet hole and the first ball outlet hole, and a large number of spherical elements in the ball inlet hole can be conveyed to the first ball outlet pipe in series; when the spherical elements need to be conveyed in a single mode, the ball blocking piece driving piece drives the ball blocking piece to move to the upper end of the first ball outlet hole, the first ball outlet hole is closed, the sliding block driving piece drives the sliding block to move to the first position, the ball receiving channel is communicated with the ball inlet hole at the moment, one of a large number of spherical elements in the ball inlet hole enters the ball receiving channel, and ball receiving is completed; then the sliding block driving piece drives the sliding block to move to a second position, the ball receiving channel is communicated with the second ball outlet hole, the spherical element in the ball receiving channel falls into the second ball outlet hole and enters the first ball outlet pipe along the second ball outlet pipe, and therefore conveying of the spherical element is completed; then the slide block driving piece drives the slide block to return to the first position for ball receiving, and the circulation can realize the single conveying of the spherical elements. Therefore, the slide block type ball conveying device for the pebble bed type high-temperature gas cooled reactor, provided by the invention, has the advantages that the spherical element simplification conveying function and the serial conveying function are realized, the assembly is not required to be repeatedly disassembled and assembled, the system availability and the economic benefit of a power station can be effectively improved, and the internal irradiation dose and the external irradiation dose of nuclear power plant operating personnel and maintenance personnel are reduced.

Another object of the present invention is to provide a method for transporting balls by a sliding block for a pebble-bed high temperature gas cooled reactor, which can realize a single transportation function and a serial transportation function of spherical elements without disassembling and assembling components.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a slide block type ball conveying method for a ball bed type high-temperature gas cooled reactor is characterized in that when balls are conveyed in series, a slide block is moved to a first position, a ball receiving channel on the slide block is communicated with a ball inlet hole and a first ball outlet hole on a box body, and a plurality of spherical elements can continuously penetrate through the ball inlet hole, the ball receiving channel and the first ball outlet hole and then enter a first ball outlet pipe;

when the ball is conveyed in a single way, the ball blocking piece moves to the upper end of the first ball outlet hole and prevents the spherical element from entering the first ball outlet hole, and the sliding block repeatedly executes the ball-dribbling step; the dribbling step comprises the following steps: and moving the sliding block to the first position, enabling one spherical element in the ball inlet hole to enter the ball receiving channel of the sliding block, moving the sliding block to the second position, enabling the ball receiving channel to be communicated with the second ball outlet hole, and enabling the spherical element in the ball receiving channel to pass through the second ball outlet hole and the second ball outlet pipe and then enter the first ball outlet pipe.

The technical advantages of the sliding block type ball conveying method for the pebble bed type high-temperature gas-cooled reactor and the sliding block type ball conveying device for the pebble bed type high-temperature gas-cooled reactor in the prior art are the same, and are not repeated herein.

Drawings

FIG. 1 is a schematic structural diagram of a sliding-block type ball transportation device for a pebble-bed high-temperature gas-cooled reactor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a ball inlet pipe; 2-a ball inlet hole; 3, a box body; 4-a slide block; 5-a first guide rail; 6-a second limit pin; 7-ball blocking member; 8-a first ball outlet; 9-a first ball outlet pipe; 10-total ball outlet pipe; 11-a tee joint; 12-a second bulb outlet pipe; 13-second ball outlet hole; 14-a first spacing pin; 15-a first connector; 16-a slider drive; 17-a first end cap; 18-a slider channel; 19-a spherical element; 20-a second guide rail; 21-a second end cap; 22-ball stop drive; 23-a second connector; 24-ball catching channel.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, the sliding block type ball transporting device for pebble bed high temperature gas cooled reactor according to the basic embodiment of the present invention includes a box 3, a ball inlet 2 formed in the box 3, a first ball outlet 8 formed in the box 3, a second ball outlet 13 formed in the box 3, a sliding block passage 18 formed in the box 3, and a ball blocking passage formed in the box 3, the ball catching device comprises a slide block 4 movably arranged in a slide block channel 18, a slide block driving piece 16 driving the slide block 4 to reciprocate between a first position and a second position in the slide block channel 18, a ball blocking piece 7 movably arranged in the ball blocking channel, a ball blocking piece driving piece 22 driving the ball blocking piece 7 to reciprocate in the ball blocking channel, a ball receiving channel 24 formed in the slide block 4, a first ball outlet pipe 9 and a second ball outlet pipe 12.

The slider channel 18 is arranged left and right, and the slider channel 18 can be arranged on the left end surface or the right end surface of the box body 3. Preferably, as shown in fig. 1, the slider channel 18 is opened on a left end surface of the box body 3, and a first end cover 17 is fixedly mounted on a left end of the box body 3 by bolts, and a right end surface of the first end cover 17 forms a left side wall of the slider channel 18, so that the slider channel 18 forms a closed space. The ball blocking channel is arranged in the front and at the back, and can be arranged on the front end surface or the back end surface of the box body 3. Preferably, as shown in fig. 2, the ball blocking passage is opened on a rear end surface of the box body 3, and a second end cover 21 is fixedly mounted on the rear end of the box body 3 by bolts, and a front end surface of the second end cover 21 forms a rear side wall of the ball blocking passage, so that the ball blocking passage forms a closed space.

The slide driving member 16 may be a linear motor or any other driving mechanism capable of outputting linear motion. The slide driving member 16 may be fixedly mounted on the first end cap 17, and an output shaft of the slide driving member 16 may be directly connected to the slide 4, or as shown in fig. 1, an output shaft of the slide driving member 16 may be connected to the slide 4 through the first connecting member 15. Similarly, the ball retainer driving member 22 may be a linear motor or other various driving mechanisms capable of outputting linear motion. The catch member driver 22 may be fixedly mounted on the second end cap 21. The output shaft of the catch member driver 22 can be connected directly to the catch member 7 or, as shown in fig. 2, the output shaft of the catch member driver 22 can also be connected to said catch member 7 via a second coupling member 23.

As shown in fig. 1, the ball inlet 2 is provided on an upper end surface of the box body 3, and a lower end of the ball inlet 2 is communicated with the slider passage 18. First ball outlet 8 and second ball outlet 13 are seted up on the lower terminal surface of box 3, the upper end of first ball outlet 8 and second ball outlet 13 all with slider passageway 18 intercommunication has the interval between first ball outlet 8 and the second ball outlet 13. The first ball outlet pipe 9 and the second ball outlet pipe 12 are both mounted on the lower end face of the box body 3, the upper end of the first ball outlet pipe 9 is communicated with the lower end of the first ball outlet hole 8, and the upper end of the second ball outlet pipe 12 is communicated with the lower end of the second ball outlet hole 13. The lower end of the second ball outlet pipe 12 is communicated with the first ball outlet pipe 9, and as shown in fig. 1, the lower end of the second ball outlet pipe 12 can be connected to the first ball outlet pipe 9 through a tee 11. The lower end of the first ball outlet pipe 9 can be provided with a total ball outlet pipe 10, and the total ball outlet pipe 10 can be integrated with the first ball outlet pipe 9. Preferably, as shown in fig. 1, a ball inlet pipe 1 communicating with an upper end of the ball inlet hole 2 is fixedly installed on an upper side of the box body 3.

The ball blocking channel is communicated with the upper end of the first ball outlet hole 8. The ball stop channel is located below the slide channel 18. The ball stop channel is preferably perpendicular to the slide channel 18. The ball blocking member driving member 22 can drive the ball blocking member 7 to move to the upper end of the first ball outlet hole 8 and prevent the ball element 19 in the ball receiving channel 24 from entering the first ball outlet hole 8, that is, the ball blocking member driving member 22 can drive the ball blocking member 7 to open or close the first ball outlet hole 8.

When the slide block 4 is located at the first position, the ball catching passage 24 can communicate with the ball inlet hole 2 and the first ball outlet hole 8, and when the slide block 4 is located at the second position, the ball catching passage 24 communicates with the second ball outlet hole 13. Wherein the first position is a position when the slide 4 moves in the slide passage 18 to a position where the ball receiving passage 24 can communicate the ball inlet hole 2 and the first ball outlet hole 8; the second position is a position when the slider 4 moves in the slider passage 18 to a position where the ball-catching passage 24 can communicate with the second ball-outlet hole 13.

When the second working condition is required to be executed to serially convey the spherical elements 19, the ball blocking member driving member 22 drives the ball blocking member 7 to move away from the upper end of the first ball outlet hole 8, the first ball outlet hole 8 is conducted, the slider 4 is driven to move to the first position by the slider driving member 16, the ball receiving channel 24 on the slider 4 is communicated with the ball inlet hole 2 and the first ball outlet hole 8, and a large number of spherical elements 19 in the ball inlet hole 2 can be serially conveyed to the first ball outlet pipe 9 through the ball receiving channel 24 and the first ball outlet hole 8. When the first working condition is required to be executed to convey the spherical elements 19 in a single way, the ball blocking piece driving piece 22 drives the ball blocking piece 7 to move to the upper end of the first ball outlet hole 8, the first ball outlet hole 8 is closed, the slide block driving piece 16 drives the slide block 4 to move to the first position, the ball receiving channel 24 is communicated with the ball inlet hole 2 at the moment, the ball blocking piece 7 blocks the spherical elements 19 from entering the first ball outlet hole 8, and one spherical element 19 in a large number of spherical elements 19 in the ball inlet hole 2 enters the ball receiving channel 24 to finish ball receiving; then the slide block driving piece 16 drives the slide block 4 to move to a second position, the spherical element 19 in the ball receiving channel 24 moves together with the slide block 4, at the moment, the ball receiving channel 24 is communicated with the second ball outlet hole 13, the spherical element 19 in the ball receiving channel 24 falls into the second ball outlet hole 13 and enters the first ball outlet pipe 9 along the second ball outlet pipe 12, and therefore conveying of the spherical element 19 is completed; the ball catching is then performed by the slider drive 16 driving the slider 4 back to the first position, and the circulation is such that the singulated delivery of the spherical elements 19 is achieved.

In the present invention, the ball blocking member 7 may adopt various structures capable of preventing the ball element 19 from entering the first ball outlet 8, for example, the ball blocking member 7 may have a net structure or a fence structure. In a preferred embodiment of the present invention, as shown in fig. 1, the ball retainer 7 is a ball retainer plate, and the upper surface of the ball retainer 7 is flush with the bottom surface of the slider channel 18. In the present embodiment, by providing the ball retainer 7 as a plate-shaped ball retainer, and making the upper surface of the ball retainer 7 flush with the bottom surface (lower surface) of the slider passage 18, when the slider 4 moves from the first position to the second position with the spherical element 19 located in the ball-catching passage 24, it is possible to avoid the spherical element 19 from colliding with the housing 3 and causing damage to the spherical element 19. Further preferably, the lower surface of the ball retainer 7 is flush with the upper surface of the first ball outlet hole 8.

In the present invention, the catching channel 24 is used to pass the ball element 19 and can accommodate one ball element 19, so the height of the catching channel 24 should be equal to or slightly larger than the diameter of the ball element 19. Preferably, the height of the ball catching channel 24 is 1-2 mm larger than the diameter of the spherical element 19, i.e. the height of the slider channel 18 is 1-2 mm larger than the diameter of the spherical element 19. By making the height of the ball-catching channel 24 1-2 mm larger than the diameter of the ball-shaped element 19, the ball-shaped element 19 can be made to be out of contact with the top wall of the slider channel 18 when the slider 4 slides in the slider channel 18 with the ball-shaped element 19, so that the ball-shaped element 19 can roll freely in the slider channel 18, avoiding the ball-shaped element 19 from being worn out by contacting with the top wall and the bottom wall of the slider channel 18 at the same time.

In a preferred embodiment, the diameter of the ball-catching channel 24 is 4-5 mm larger than the diameter of the spherical element 19. Further preferably, the bore diameters or inner diameters of the ball inlet hole 2, the ball inlet pipe 1, the first ball outlet hole 8, the second ball outlet pipe 12, the first ball outlet pipe 9 and the second ball outlet hole 13 are all the same as the diameter of the ball receiving channel 24 and are all 4-5 mm larger than the diameter of the spherical element 19. Thereby allowing the spherical element 19 to move smoothly.

As shown in fig. 1, the ball inlet hole 2 is preferably arranged coaxially with the first ball outlet hole 8. In the present embodiment, by coaxially arranging the ball inlet hole 2 and the first ball outlet hole 8, it is possible to make the movement of the spherical elements 19 smoother when the spherical elements 19 are conveyed in tandem.

In the present invention, in order to ensure that the slider 4 can be accurately stopped at the first position and the second position, preferably, a first limit pin 14 and a second limit pin 6 are further disposed in the slider channel 18, the first limit pin 14 and the second limit pin 6 are respectively located at the left end and the right end of the slider channel 18, when the slider 4 is located at the first position, the second limit pin 6 contacts with the right end of the slider 4, and when the slider 4 is located at the second position, the first limit pin 14 contacts with the left end of the slider 4. The first limit pin 14 and the second limit pin 6 can be fixed on the box body 3 through screws.

In order to avoid the slider 4 damaging the ball element 19 during transportation of the ball element 19, in a preferred embodiment of the present invention, a guide is further disposed in the slider channel 18, and the guide connects the slider channel 18 and the slider 4 when the slider 4 slides left and right in the slider channel 18, so that a large impact force on the ball element 19 in the ball channel 24 due to poor sliding of the slider 4 in the slider channel 18 can be avoided.

The guide member in the above embodiment may adopt various existing guide structures, and preferably, as shown in fig. 2, a first guide rail 5 and a second guide rail 20 are fixedly mounted on front and rear side surfaces of the slider channel 18, respectively, a guide groove is formed on front and rear side surfaces of the slider 4, respectively, and the first guide rail 5 and the second guide rail 20 are slidably mounted in the guide groove, respectively.

In the above-mentioned embodiment, when the ball blocking member 7 closes the first ball outlet hole 8, the ball inlet pipe 1, the ball inlet hole 2, the ball receiving passage 24, the second ball outlet hole 13, the second ball outlet pipe 12 and the total ball outlet pipe 10 form a single ball conveying passage of the spherical element 19. When the ball blocking member 7 is conducted to the first ball outlet hole 8, the ball inlet pipe 1, the ball inlet hole 2, the ball receiving passage 24, the first ball outlet hole 8, the first ball outlet pipe 9 and the total ball outlet pipe 10 form a serial conveying passage of the spherical element 19.

The present invention also provides a sliding block type ball conveying method for a pebble-bed high temperature gas cooled reactor, which is the same as the technical concept of the sliding block type ball conveying device for the pebble-bed high temperature gas cooled reactor provided in the above embodiment, when the serial ball conveying is performed, the sliding block 4 is moved to the first position, the ball receiving passage 24 on the sliding block 4 is communicated with the ball inlet hole 2 and the first ball outlet hole 8 on the box body 3, and the plurality of spherical elements 19 can continuously pass through the ball inlet hole 2, the ball receiving passage 24 and the first ball outlet hole 8 and then enter the first ball outlet pipe 9.

When the ball is conveyed in a single way, the ball blocking piece 7 moves to the upper end of the first ball outlet hole 8 and prevents the ball element 19 from entering the first ball outlet hole 8, the first ball outlet hole 8 is closed, and the slide block 4 repeatedly executes the ball dribbling step. The dribbling step comprises the following steps: moving the slide 4 to the first position, one of the spherical elements 19 in the ball inlet hole 2 enters the ball receiving channel 24 of the slide 4, moving the slide 4 to the second position, the ball receiving channel 24 is communicated with the second ball outlet hole 13, and the spherical element 19 in the ball receiving channel 24 passes through the second ball outlet hole 13 and the second ball outlet pipe 12 and then enters the first ball outlet pipe 9. Wherein the first position is a position when the slide 4 moves in the slide passage 18 to a position where the ball receiving passage 24 can communicate the ball inlet hole 2 and the first ball outlet hole 8; the second position is a position when the slider 4 moves in the slider passage 18 to a position where the ball-catching passage 24 can communicate with the second ball-outlet hole 13.

In summary, the technical scheme provided by the invention has the following technical effects and advantages:

the invention can realize the function of singly conveying the spherical elements 19 and the function of serially conveying the spherical elements 19 by the matching action of the ball blocking piece 7 and the sliding block 4. When the ball blocking piece 7 is in a closed state, the slider 4 is driven by the slider driving piece 16 to reciprocate, so that the unified conveying function of the spherical element 19 can be realized; when the slide 4 is moved back to the ball-catching position (first position), the slide drive 16 is deactivated and the ball stop 7 is opened by the ball stop drive 22, so that the tandem transfer function of the spherical elements 19 is achieved. The two functions can be freely switched by the cooperation of the slider drive 16 and the catch ball drive 22. Therefore, the invention can meet the use requirements of different working conditions of the high-temperature reactor spent fuel storage system, avoids frequent disassembly and reinstallation of equipment, improves the availability of the system and the economic efficiency of the power station, and reduces the risks of internal irradiation and external irradiation born by the constructors of the power station.

In the present invention, orientation words such as "up, down, left and right" are defined, and in the case where no description is made to the contrary, the orientation words are defined in the normal use of the sliding ball transfer device for the pebble bed type high temperature gas cooled reactor provided in the present invention, and correspond to the up, down, left and right directions shown in fig. 1. The term "inner and outer" refers to the inner and outer contours of the respective component parts. These directional terms are used for ease of understanding and are not intended to limit the scope of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, integral connections, or the presence of intervening components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.