CN115206564A - A kind of high temperature reactor reciprocating fuel lifting device and fuel lifting method - Google Patents

Abstract

The invention provides a high-temperature reactor reciprocating type fuel lifting device and a fuel lifting method. A guide rail used for vertical sliding of the fuel lifting mechanism is formed between the two side supporting pieces, a plurality of groups of ball passing through holes are formed in the two sides of each side supporting piece, and the side supporting pieces are connected with the ball inlet pipe and the ball outlet pipe. The driving mechanism drives the fuel lifting mechanism to continuously reciprocate up and down until the fuel balls are conveyed to the ball outlet pipe, pass through the pressure-bearing shell and then are conveyed to a target position. The fuel element is conveyed from a low position to a high position by adopting a mechanical lifting method, a complex pneumatic conveying system is not required to be configured, the system configuration is simplified, and the equipment failure and helium sealing problems caused by the complex system are avoided; the invention has the condition of vertical arrangement, thereby improving the fuel transmission efficiency; the invention adopts the reciprocating principle to convey the fuel elements, which is beneficial to improving the reliability of the equipment.

Description

A kind of high temperature reactor reciprocating fuel lifting device and fuel lifting method

technical field

The invention relates to the technical field of reactor engineering, in particular to a high temperature reactor reciprocating fuel lifting device and a fuel lifting method.

Background technique

The reactor core of the pebble bed type high temperature gas-cooled reactor is composed of spherical fuel elements, and the non-stop refueling function of the reactor can be realized by using the favorable geometric shape of the spherical fuel elements. During the operation of the reactor, the fuel elements in the active zone of the core flow from top to bottom by gravity and are discharged from the discharge pipe at the bottom of the pressure vessel. The discharged fuel elements first enter the core unloading device. The core unloading device singulates the fuel elements and transports them to the downstream crushed ball separation device. After crushed ball sorting, the crushed balls fall into the crushed ball tank. The components enter the fuel consumption measurement positioning device for fuel consumption measurement. The spent fuel elements that reach the target burnup depth are transported to the spent fuel discharge pipeline, and finally put into the spent fuel storage tank for storage. The fuel elements that do not reach the target burnup are transported to the core recirculation pipeline. After the fuel elements reach the lowest point of the gravity ball drop pipeline, they need to be transported back to the core by pneumatic or mechanical lifting. The use of pneumatic conveying to lift fuel elements requires a complex pneumatic conveying system. Due to the large number of pipelines and equipment, it is necessary to overcome a great problem of helium gas sealing. At the same time, due to the influence of fluid turbulence characteristics, the efficiency of fuel improvement is greatly limited. . Therefore, it is of great significance to study the way of mechanical lifting to transport fuel elements for simplifying the configuration of the fuel handling system and improving the delivery efficiency of fuel elements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high temperature reactor reciprocating fuel lifting device and a fuel lifting method, which can simplify the configuration of the fuel loading and unloading system and improve the delivery efficiency of fuel elements, thereby improving the operational stability and economy of the fuel loading and unloading system.

On the one hand, the embodiments of the present application provide a high temperature reactor reciprocating fuel lifting device, which includes: a side support, a fuel lifting mechanism and a driving mechanism.

There are two side supports, both of which are perpendicular to the horizontal plane. A guide rail for the vertical sliding of the fuel lifting mechanism is formed between the two side supports that are parallel to each other. Several groups of passing balls are opened on both sides of the side supports. Through holes, each group of ball through holes includes a relatively low-position first ball-through hole and a relatively high-position second ball-through hole, each group of the first ball-through hole and the second ball-through hole. They are connected by an external inclined transmission pipe. The first ball passing hole and the second ball passing hole are respectively located on the two side supports. The bottom end of the side supports is connected to the ball pipe. The transfer tube at the end is connected to the tube.

The two sides of the fuel lifting mechanism are provided with several groups of goal openings and ball exit openings, and each group of goal openings and ball exit openings is connected to form a ball passage. The ball port is higher than the ball outlet port, and through the vertical sliding of the fuel lifting mechanism, the goal tube or one of the first ball passing holes is communicated with one of the goal ports, or one of the second ball passing holes is communicated with the ball port. A ball outlet is connected.

The driving mechanism is connected to and drives the fuel lifting mechanism to reciprocate vertically between the two side supports.

The high-temperature reactor reciprocating fuel lifting device of the present invention adopts the method of mechanical lifting to transport the fuel elements from a low place to a high place, and does not need to configure a complex pneumatic conveying system, which is beneficial to simplify the system configuration and avoid equipment failures caused by complex systems. Helium sealing conundrum.

The high temperature reactor reciprocating fuel lifting device of the present invention has the condition of vertical arrangement, which is beneficial to shorten the fuel transmission path and improve the fuel transmission efficiency.

In some embodiments, it also includes a pressure-bearing casing, the side support, the fuel lifting mechanism and the transmission pipe are all arranged in the pressure-bearing casing, and the outward ends of the goal pipe and the ball outlet pipe protrude from the pressure casing Outside the body, the drive mechanism is installed on the top head above the pressure-bearing housing.

In some embodiments, the upper end of the side support is fixedly connected to the top support, the lower end of the side support is fixedly connected to the bottom support, the top support is fixedly installed above the pressure-bearing housing, and the bottom support is fixedly installed on the bearing Below the pressure housing, the bottom end of the fuel lifting mechanism is fixedly connected to the guide rod, and the bottom support member is provided with a bottom guide hole for the guide rod to penetrate.

In some embodiments, the driving mechanism includes a motor and a transmission, an output end of the motor is connected to an input end of the transmission, an output end of the transmission is connected to a lead screw, and the top head and the top support are provided with holes for the lead screw to pass through. The lower end of the lead screw is connected to the upper end of the fuel lifting mechanism through a bearing.

In some embodiments, the fuel lifting mechanism includes a plurality of sliders that are detachably connected to each other in a vertical direction, each slider is provided with a set of ball openings and a ball outlet, and the uppermost slider is connected by a bearing connecting wire The lowermost slider is fixedly connected to the guide rod.

In some embodiments, two adjacent sliders are connected by screw threads.

In some embodiments, the upper end of the slider is fixedly provided with a top shaft, the top shaft is provided with an external thread, the lower end of the slider is provided with a bottom groove, and the bottom groove is provided with an internal thread matched with the external thread of the top shaft, The two adjacent sliders are connected by threads between the top shaft and the bottom groove, the bottom groove of the lowermost slider is fixedly connected to a guide rod, and the top shaft of the uppermost slider is connected to the lead screw through a bearing.

In some embodiments, the slider is made of carbon fiber. In order to achieve the purpose of reducing the weight of the moving parts and saving the energy consumption of the driving mechanism.

In some embodiments, the distance between the goal openings of two adjacent sliders is the same, the distance between the ball outlet openings of two adjacent sliders is the same, and the distance between two adjacent first ball through holes on the side support equal, the distance between two adjacent second ball through holes is equal.

On the other hand, the embodiments of the present application provide a fuel lifting method, using the above-mentioned high temperature reactor reciprocating fuel lifting device, including the following steps:

S1, in the initial position, the goal pipe is connected with the goal opening of the lowermost slider, and each first ball through hole is connected with the goal opening of a corresponding slider. When charging, the first fuel ball Enter from the goal pipe, pass through the pressure-bearing housing, and enter the ball passage of the lowermost slider in the fuel lifting mechanism through the side support;

S2, the driving mechanism drives the fuel lifting mechanism to move upward, and drives the first fuel ball to move upward synchronously. When the slider at the lowermost end moves to communicate with the first and second through-ball through holes of the side support, the first fuel ball moves upwards synchronously. The ball enters the first second ball passing hole, and rolls along the transfer pipe to the first first ball passing hole;

S3, the driving mechanism drives the fuel lifting mechanism to move down to the initial position, the first first ball passing hole communicates with the goal opening of the second sliding block, and the first fuel ball enters the passing ball of the second sliding block In the channel, at the same time, the second fuel ball enters from the goal tube to the ball passage of the lowermost slider;

S4, the driving mechanism drives the fuel lifting mechanism to move upward, and drives the first fuel ball and the second fuel ball to move upward synchronously. When the second slider moves to communicate with the second second ball through hole of the side support When the first fuel ball enters the second second ball passing hole, and rolls along the transfer pipe to the second first ball passing hole; at the same time, when the lowermost slider moves to the side The first and second ball passing holes of the support are communicated, and the second fuel ball enters the first and second ball passing holes, and rolls along the transmission pipe to the first first ball passing hole;

S5, the driving mechanism drives the fuel lifting mechanism to reciprocate up and down continuously until the fuel balls are transported to the ball outlet pipe, and then transported to the target position after passing through the pressure-bearing housing.

The beneficial effects of the present invention are:

(1) The high temperature reactor reciprocating fuel lifting device of the present invention adopts the method of mechanical lifting to transport the fuel elements from a low place to a high place, and does not need to configure a complex pneumatic conveying system, which is beneficial to simplify the system configuration and avoid the complicated system. Equipment failure and helium sealing challenges;

(2) The high temperature reactor reciprocating fuel lifting device of the present invention has the condition of vertical arrangement, which is beneficial to shorten the fuel transmission path and improve the fuel transmission efficiency;

(3) The high temperature reactor reciprocating fuel lifting device of the present invention adopts the reciprocating principle to transport fuel elements, has a simple structure and few matching parts, which is beneficial to improve the reliability of the equipment.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings,

in:

FIG. 1 is a schematic structural diagram of a high temperature reactor reciprocating fuel lifting device in an embodiment of the application;

FIG. 2 is a schematic diagram of the internal structure of the high temperature reactor reciprocating fuel lifting device in the embodiment of the application;

3 is a schematic structural diagram of a slider in an embodiment of the application;

Reference number:

1-drive mechanism; 2-top head; 3-top support; 4-ball outlet; 5-transmission pipe; 6-slider; 601-top shaft; 602-goal port; 603-ball port; 604-ball passage; 605-bottom groove; 7-goal tube; 8-cylinder; 9-lead screw; 10-side support; 11-bottom support; 12-guide rod.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

The high temperature reactor reciprocating fuel lifting device according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3 , an embodiment of the present application proposes a reciprocating fuel lifting device for a high temperature reactor on the one hand, comprising: a driving mechanism 1 , a pressure-bearing housing, a support member, a ball flow transmission assembly, and a fuel lifting mechanism.

The support member includes a side support member 10, a top support member 3 and a bottom support member 11. There are two side support members 10, all of which are arranged perpendicular to the horizontal plane. The side support member 10 is a strip plate structure, and the two side support members 10 parallel. A guide rail for the vertical sliding of the fuel lifting mechanism is formed between the two side supports 10 to support the fuel lifting mechanism and play a motion guiding role. The fuel lifting mechanism fits the two side supports 10 and moves. The contact surface with the side support 10 is a smooth contact surface, so that the fuel lifting mechanism slides more smoothly. The upper end of the side support 10 is fixedly connected to the top support 3, the lower end of the side support 10 is fixedly connected to the bottom support 11, the top support 3 is fixedly installed above the pressure-bearing shell, and the bottom support 11 is fixedly installed in the pressure-bearing shell Below the body, a certain space is left between the bottom support 11 and the bottom of the pressure-bearing housing. The driving mechanism 1 is connected to and drives the fuel lifting mechanism to reciprocate vertically between the two side supports 10 .

Both sides of the side support 10 are provided with several groups of ball-passing holes, which are used as transmission channels for fuel balls. Each group of ball-passing holes includes a first ball-passing hole and a second ball-passing hole. Among the holes, the position of the first ball passing hole is relatively low, and the position of the second ball passing hole is relatively high. The first ball through hole and the second ball through hole are located on the two side supports 10, respectively.

The ball flow transmission assembly includes a transmission pipe 5, a goal pipe 7 and an outlet pipe 4, which are used to transmit the fuel balls from a low place to a high place. Each group of the first ball-passing through holes and the second ball-passing through holes are connected by an external inclined transmission pipe 5 for rolling the fuel balls from a high place to a low place by gravity. The bottom end of one of the side supports 10 is connected to the ball pipe 7 , and the transfer pipe 5 at the uppermost end of one of the side supports 10 is connected to the ball pipe 4 . The fuel balls enter the fuel lifting mechanism from the goal pipe 7, are transported by layers of transmission pipes 5, and finally output from the top discharge pipe 4 to the target position.

There are several groups of goal ports 602 and ball exit ports 603 on both sides of the fuel lifting mechanism, and each group of goal ports 602 and ball exit ports 603 are connected to form a ball passage 604. In the ball port 603, the goal port 602 is higher than the ball outlet port 603, and the ball passage 604 is inclined. In the fuel lifting mechanism, the fuel ball can roll from the goal opening 602 to the ball exit opening 603 by its own gravity. Through the vertical sliding of the fuel lift mechanism, the goal pipe 7 or one of the first ball passing holes is communicated with one of the goal ports 602, so that the fuel balls enter the fuel lift mechanism from the side support 10, or one of them The second ball passing through hole communicates with one of the ball outlet ports 603 , so that the fuel balls are discharged from the fuel lifting mechanism to the side support 10 .

The pressure-bearing shell includes a cylinder body 8 and a top head 2, and the top head 2 is detachably connected to the upper end of the cylinder body 8 through fasteners such as bolts and seals for opening and closing the pressure-bearing casing. The side support 10 , the fuel lifting mechanism and the transmission pipe 5 are all arranged in the pressure-bearing housing, and the outward ends of the goal pipe 7 and the ball-out pipe 4 both extend out of the pressure-bearing housing.

The drive mechanism 1 is installed on the top sealing head 2 above the pressure-bearing housing. The drive mechanism 1 includes a motor and a transmission. The output end of the motor is connected to the input end of the transmission, and the output end of the transmission is connected to the lead screw 9. The top sealing head 2 and the top support 3 are provided with screw holes for the lead screw 9 to pass through. . The lower end of the lead screw 9 is connected to the upper end of the fuel lifting mechanism through a bearing.

The bottom end of the fuel lifting mechanism is fixedly connected to the guide rod 12 , and the bottom support 11 is provided with a bottom guide hole through which the guide rod 12 penetrates. The guide rod 12 is arranged in the space reserved by the inner bottom support 11 of the cylinder 8 and the pressure-bearing housing. The guide rod 12 rises and falls with the rise and fall of the fuel lifting mechanism. The guide rod 12 moves along the guide hole and is always in the space. Inward movement, the guide hole and the guide rod 12 play a limiting role on the fuel lifting mechanism.

In some specific embodiments, the screw hole is located at the center of the top support 3 , and the bottom guide hole is located at the center of the bottom support 11 .

In some specific embodiments, the transmission pipe 5 is similar to an n-shaped structure, and includes an integrally formed goal pipe piece, a transition pipe piece and a ball discharge pipe piece, and the transition pipe piece is connected between the goal pipe piece and the ball discharge pipe piece. The goal pipe is communicated with the second ball passing through hole, and the ball outlet pipe is communicated with the first ball passing hole. The transmission pipe 5 is inclined as a whole, so that the fuel ball can roll from the goal pipe to the ball discharge pipe by its own gravity. Specifically, the goal pipe fitting, the transition pipe fitting and the ball discharge pipe fitting are all inclined, and the height of one end of the goal in each pipe fitting is higher than the height of the end of the ball discharge.

In some specific embodiments, as shown in FIG. 3 , the fuel lifting mechanism includes a plurality of sliders 6 that are detachably connected to each other in the vertical direction, and each slider 6 is provided with a set of goal openings 602 and ball exit openings 603 , the uppermost sliding block 6 is connected to the lead screw 9 through the bearing, and the lowermost sliding block 6 is fixedly connected to the guide rod 12 . Wherein, the bearing can be replaced with other rotating parts that play the same role as the bearing, so as to ensure that the lead screw 9 rotates and the fuel lifting mechanism does not rotate.

In some specific embodiments, the setting position of the bulb outlet pipe 4 can be in two situations. The first situation is that the bulb outlet tube 4 can be connected to the lowest end of the top transfer tube 5, that is, the outlet of the bulb outlet tube piece. At the ball end, when the fuel ball moves with the uppermost slider 6 to the second ball through hole at the uppermost end that communicates with the ball outlet 603 of the slider 6, the fuel ball enters from the ball outlet 603 of the slider 6 to the top The transfer pipe 5 finally rolls to the ball discharge end of the ball discharge pipe of the transfer pipe 5 , and then is discharged from the ball discharge pipe 4 . In the second case, the transfer pipe 5 at the top does not need to be installed, and the ball pipe 4 can be directly connected to the second ball through hole at the uppermost end. When the fuel ball moves with the uppermost slider 6 to the uppermost second ball passing hole When the through hole communicates with the ball outlet 603 of the slider 6 , the fuel balls directly enter the ball outlet 603 from the ball outlet 603 of the slider 6 and are discharged.

In some specific embodiments, the driving mechanism 1 performs linear reciprocating motion, and a structure that achieves the same effect as the structure of the lead screw 9 can be used, such as a chain wheel and chain mechanism.

In some specific embodiments, two adjacent sliding blocks 6 are connected by screws, which can facilitate disassembly and assembly.

In some specific embodiments, the upper end of the slider 6 is fixedly provided with a top shaft 601 , the top shaft 601 is provided with an external thread, the lower end of the slider 6 is provided with a bottom groove 605 , and the bottom groove 605 is provided with an outer thread that is connected to the top shaft 601 . The inner thread matched with the thread, the two adjacent sliders 6 are connected by the thread between the top shaft 601 and the bottom groove 605, the bottom groove 605 of the lowermost slider 6 is fixedly connected to the guide rod 12, and the uppermost slider 6 is connected to the guide rod 12. The top shaft 601 of 6 is connected to the lead screw 9 through a bearing.

In some specific embodiments, the slider 6 is made of carbon fiber. In order to achieve the purpose of reducing the weight of the moving parts and saving the energy consumption of the driving mechanism.

In some specific embodiments, the distance between the goal openings 602 of two adjacent sliders 6 is equal, the distance between the ball outlet openings 603 of two adjacent sliders 6 is equal, and the two adjacent second The distance between the first ball through holes is equal, and the distance between two adjacent second ball through holes is the same.

On the other hand, the embodiments of the present application provide a fuel lifting method, which utilizes the above-mentioned high temperature reactor reciprocating fuel lifting device. For the convenience of explanation, the slider 6 at the bottom of the fuel lifting mechanism is called the first slider, the upward direction is called the second slider, the third slider... , and the first transmission pipe 5 at the bottom is called the first slider. A transmission pipe, which is called the second transmission pipe, the third transmission pipe, etc., is called the second transmission pipe, the third transmission pipe, etc., and the first ball passing hole at the bottom is the first first ball passing hole, which is called the second ball passing hole in the upward direction. The first through ball through hole, the third first through ball through hole..., the second second through ball through hole at the bottom is the first second through ball through hole, which is called the second second through ball through hole in turn. Through hole, third second ball through hole... .

The method specifically includes the following steps:

S1, in the initial position, the goal tube 7 communicates with the goal opening 602 of the first slider, and each first ball passing hole communicates with the goal opening 602 of a corresponding slider 6, that is, the first first The ball through hole communicates with the goal opening 602 of the first slider, and the second first ball through hole communicates with the goal opening 602 of the second slider. . . .

When charging, the first fuel ball enters from the goal pipe 7, passes through the pressure-bearing housing, and enters the ball passage 604 of the first slider through the side support 10;

S2, the driving mechanism 1 drives the fuel lifting mechanism to move upward as a whole, and drives the first fuel ball to move upward synchronously. A fuel ball enters the first second ball passing hole, and rolls along the first transmission pipe to the first first ball passing hole;

S3, the driving mechanism 1 drives the fuel lifting mechanism to move down to the initial position, the first first ball passing hole communicates with the goal 602 of the second slider, and the first fuel ball enters the passing ball of the second slider In the channel 604, at the same time, the second fuel ball enters the ball passage 604 of the first slider from the goal tube 7;

S4, the driving mechanism 1 drives the fuel lifting mechanism to move upward to the height at which the fuel lifting mechanism moves in step S2, and drives the first fuel ball and the second fuel ball to move upward synchronously. When the second second ball passing hole of the fuel ball is connected, the first fuel ball enters the second second ball passing hole, and rolls along the second transmission pipe to the second first ball passing hole; and At the same time, when the first slider moves to communicate with the first and second ball passing holes of the side support 10, the second fuel ball enters the first and second ball passing holes and travels along the first transmission pipe. Scroll to the first first ball through hole;

S5, the driving mechanism 1 drives the fuel lifting mechanism to reciprocate up and down continuously until the fuel balls are transported to the ball outlet pipe 4, and then transported to the target position after passing through the pressure-bearing housing.

The present invention will be further described below through specific embodiments.

Example 1

As shown in Figures 1-3, a high temperature reactor reciprocating fuel lifting device includes: a driving mechanism 1, a pressure-bearing casing, a support, a ball flow transmission assembly and a fuel lifting mechanism.

The support member includes a side support member 10, a top support member 3 and a bottom support member 11. There are two side support members 10, all of which are arranged perpendicular to the horizontal plane. The side support member 10 is a strip plate structure, and the two side support members 10 parallel. A guide rail for the vertical sliding of the fuel lifting mechanism is formed between the two side supports 10 to support the fuel lifting mechanism and play a motion guiding role. The fuel lifting mechanism fits the two side supports 10 and moves. The contact surface with the side support 10 is a smooth contact surface, so that the fuel lifting mechanism slides more smoothly. The upper end of the side support 10 is fixedly connected to the top support 3, the lower end of the side support 10 is fixedly connected to the bottom support 11, the top support 3 is fixedly installed above the pressure-bearing shell, and the bottom support 11 is fixedly installed in the pressure-bearing shell lower part of the body. The driving mechanism 1 is connected to and drives the fuel lifting mechanism to reciprocate vertically between the two side supports 10 .

The two sides of the side support 10 are provided with several groups of ball passage holes, which are used as transmission channels for fuel balls. From the perspective of FIG. 2, each group of ball passage holes includes a first ball passage hole on the left and a ball passage hole on the right. The second ball passing holes on the side, in each group of ball passing holes, the position of the first ball passing hole is relatively low, and the position of the second ball passing hole is relatively high. The first ball passing holes are all located on the left side support 10 , and the second ball passing holes are all located on the right side support 10 .

The ball flow transmission assembly includes a transmission pipe 5, a goal pipe 7 and an outlet pipe 4, which are used to transmit the fuel balls from a low place to a high place. Each group of the first ball-passing through holes and the second ball-passing through holes are connected by an external inclined transmission pipe 5 for rolling the fuel balls from a high place to a low place by gravity. From the perspective of FIG. 2 , the bottom end of the left side support 10 is connected to the ball pipe 7 , and the uppermost transmission pipe 5 of the left side support 10 is connected to the ball pipe 4 . The fuel balls enter the fuel lifting mechanism from the goal pipe 7, are transported by layers of transmission pipes 5, and finally output from the top discharge pipe 4 to the target position.

The fuel lifting mechanism includes a plurality of sliding blocks 6 that are detachably connected to each other in the vertical direction, and each sliding block 6 is provided with a set of goal openings 602 and ball exit openings 603 . Specifically, from the perspective of FIG. 3 , the left side of the slider 6 is provided with a ball opening 602 , and the right side of the slider 6 is provided with a ball outlet 603 . Each group of goal openings 602 and ball exits 603 are connected to form a ball passage 604. In each group of goal openings 602 and ball exits 603, the goal opening 602 is higher than the ball exit 603, and the ball passage 604 is inclined. In the fuel lifting mechanism, the fuel ball can roll from the goal opening 602 to the ball exit opening 603 by its own gravity. Through the vertical sliding of the fuel lifting mechanism, the goal pipe 7 is communicated with the goal opening 602 of the lowermost slider 6, so that the fuel balls enter the ball passage 604 of the lowermost slider 6 from the goal pipe 7 ; Or make one of the second ball passing holes communicate with the goal opening 602 of one of the sliders 6, so that the fuel ball enters the ball passing channel 604 of the slider 6 from the goal tube 7 to the corresponding position; or A second ball passing hole communicates with the ball outlet 603 of one of the sliders 6 , so that the fuel balls are discharged from the slider 6 to the side support 10 .

The pressure-bearing housing includes a cylinder body 8 and a top sealing head 2, and the top sealing head 2 is detachably connected to the upper end of the cylinder body 8 through bolts and seals for opening and closing the pressure-bearing housing. The side support 10 , the fuel lifting mechanism and the transmission pipe 5 are all arranged in the pressure-bearing housing, and the outward ends of the goal pipe 7 and the ball-out pipe 4 both extend out of the pressure-bearing housing. The goal pipe 7 is used to connect the input device of the fuel balls, and the exit pipe 4 is used to connect the core.

The drive mechanism 1 is installed on the top sealing head 2 above the pressure-bearing housing. The drive mechanism 1 includes a motor and a transmission. The output end of the motor is connected to the input end of the transmission, and the output end of the transmission is connected to the lead screw 9. The top sealing head 2 and the top support 3 are provided with screw holes for the lead screw 9 to pass through. . The lower end of the lead screw 9 is connected to the upper end of the fuel lifting mechanism through a bearing. Specifically, the lower end of the lead screw 9 is connected to the upper end of the uppermost slider 6 through a bearing, and the screw hole is located at the center of the top support 3 .

The bottom end of the fuel lifting mechanism is fixedly connected to the guide rod 12 , and specifically, the upper end of the guide rod 12 is connected to the lower end of the lowermost sliding block 6 . The bottom support 11 is provided with a bottom guide hole for the guide rod 12 to pass through, and the bottom guide hole is located at the center of the bottom support 11 . The guide rod 12 is arranged in the cylinder body 8, the guide rod 12 rises and falls with the rise and fall of the fuel lifting mechanism, the guide rod 12 moves along the guide hole, and the bottom guide hole and the guide rod 12 limit the fuel lifting mechanism.

The transmission pipe 5 has a similar n-shaped structure, and includes an integrally formed goal pipe piece, a transition pipe piece and a ball discharge pipe piece, and the transition pipe piece is connected between the goal pipe piece and the ball discharge pipe piece. The goal pipe is communicated with the second ball passing through hole, and the ball outlet pipe is communicated with the first ball passing hole. The transmission pipe 5 is inclined as a whole, so that the fuel ball can roll from the goal pipe to the ball discharge pipe by its own gravity. Specifically, the goal pipe fitting, the transition pipe fitting and the ball discharge pipe fitting are all inclined, and the height of one end of the goal in each pipe fitting is higher than the height of the end of the ball discharge.

The setting position of the ball outlet pipe 4 is: connect the ball outlet pipe 4 to the lowest end of the transmission pipe 5 at the top, that is, the ball outlet end of the ball outlet pipe fitting, when the fuel ball moves with the uppermost slider 6 to the uppermost second When the ball through hole communicates with the ball outlet 603 of the slider 6, the fuel balls enter the top transfer pipe 5 from the ball outlet 603 of the slider 6, and finally roll to the ball outlet end of the ball outlet pipe of the transfer pipe 5, Then it is discharged from the outlet tube 4.

The two adjacent sliding blocks 6 are connected by screws, which can be easily disassembled. The upper end of the slider 6 is fixedly provided with a top shaft 601, the top shaft 601 is provided with an external thread, the lower end of the slider 6 is provided with a bottom groove 605, and the bottom groove 605 is provided with an internal thread matched with the external thread of the top shaft 601. The top shaft 601 and the bottom groove 605 are threadedly connected between the adjacent two sliders 6. The bottom groove 605 of the lowermost slider 6 is fixedly connected to the guide rod 12, and the top shaft 601 of the uppermost slider 6 is connected by a bearing. Screw 9.

The slider 6 is made of carbon fiber. In order to achieve the purpose of reducing the weight of the moving parts and saving the energy consumption of the driving mechanism.

The distance between the goal openings 602 of two adjacent sliders 6 is equal, the distance between the ball outlet openings 603 of two adjacent sliders 6 is equal, and the distance between two adjacent first ball through holes on the side support 10 is equal , the distance between two adjacent second ball through holes is equal.

On the other hand, the embodiments of the present application provide a fuel lifting method, which utilizes the above-mentioned high temperature reactor reciprocating fuel lifting device. For the convenience of explanation, the slider 6 at the bottom of the fuel lifting mechanism is called the first slider, the upward direction is called the second slider, the third slider... , and the first transmission pipe 5 at the bottom is called the first slider. A transmission pipe, which is called the second transmission pipe, the third transmission pipe, etc., is called the second transmission pipe, the third transmission pipe, etc., and the first ball passing hole at the bottom is the first first ball passing hole, which is called the second ball passing hole in the upward direction. The first through ball through hole, the third first through ball through hole..., the second second through ball through hole at the bottom is the first second through ball through hole, which is called the second second through ball through hole in turn. Through hole, third second ball through hole... .

The method specifically includes the following steps:

S1, in the initial position, the goal tube 7 communicates with the goal opening 602 of the first slider, and each first ball passing hole communicates with the goal opening 602 of a corresponding slider 6, that is, the first first The ball through hole communicates with the goal opening 602 of the first slider, and the second first ball through hole communicates with the goal opening 602 of the second slider. . . .

When charging, the first fuel ball enters from the goal pipe 7, passes through the pressure-bearing housing, and enters the ball passage 604 of the first slider through the side support 10;

S2, the driving mechanism 1 drives the fuel lifting mechanism to move upward as a whole, and drives the first fuel ball to move upward synchronously. A fuel ball enters the first second ball passing hole, and rolls along the first transmission pipe to the first first ball passing hole;

S3, the driving mechanism 1 drives the fuel lifting mechanism to move down to the initial position, the first first ball passing hole communicates with the goal 602 of the second slider, and the first fuel ball enters the passing ball of the second slider In the channel 604, at the same time, the second fuel ball enters the ball passage 604 of the first slider from the goal tube 7;

S4, the driving mechanism 1 drives the fuel lifting mechanism to move upward to the height at which the fuel lifting mechanism moves in step S2, and drives the first fuel ball and the second fuel ball to move upward synchronously. When the second second ball passing hole of the fuel ball is connected, the first fuel ball enters the second second ball passing hole, and rolls along the second transmission pipe to the second first ball passing hole; and At the same time, when the first slider moves to communicate with the first and second ball passing holes of the side support 10, the second fuel ball enters the first and second ball passing holes and travels along the first transmission pipe. Scroll to the first first ball through hole;

S5, the driving mechanism 1 drives the fuel lifting mechanism to reciprocate up and down continuously until the fuel balls are transported to the ball outlet pipe 4, and then transported to the target position after passing through the pressure-bearing housing.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean a specific feature, structure, material, or description described in connection with the embodiment or example. Features are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A high temperature stack reciprocating fuel lift apparatus, comprising:

the fuel lifting mechanism comprises two side supporting pieces, wherein two side supporting pieces are arranged and are perpendicular to the horizontal plane, a guide rail for vertical sliding of the fuel lifting mechanism is formed between the two parallel side supporting pieces, a plurality of groups of ball passing through holes are formed in the two sides of each side supporting piece, each group of ball passing through holes comprise first ball passing through holes with relatively lower positions and second ball passing through holes with relatively higher positions, each group of first ball passing through holes and second ball passing through holes are connected through an external inclined transmission pipe, the first ball passing through holes and the second ball passing through holes are respectively positioned on the two side supporting pieces, the positions, close to the bottom ends, of the side supporting pieces are connected with a ball inlet pipe, and the uppermost transmission pipe of each side supporting piece is connected with a ball outlet pipe;

the fuel lifting mechanism is provided with a plurality of groups of ball inlets and ball outlets on two sides, each group of ball inlets and ball outlets are communicated to form a ball passing channel, the ball inlets are higher than the ball outlets in each group of ball inlets and ball outlets, and the ball inlet pipe or one of the first ball passing through holes is communicated with one of the ball inlets or one of the second ball passing through holes is communicated with one of the ball outlets through the vertical sliding of the fuel lifting mechanism;

and the driving mechanism is connected with and drives the fuel lifting mechanism to vertically reciprocate between the two side supporting pieces.

2. The high-temperature reactor reciprocating type fuel lifting device according to claim 1, further comprising a pressure-bearing shell, wherein the side supporting members, the fuel lifting mechanism and the transmission pipe are all arranged in the pressure-bearing shell, outward ends of the ball inlet pipe and the ball outlet pipe all extend out of the pressure-bearing shell, and the driving mechanism is arranged on a top head above the pressure-bearing shell.

3. The high temperature reactor reciprocating type fuel lifting device according to claim 2, wherein the upper end of the side support member is fixedly connected with a top support member, the lower end of the side support member is fixedly connected with a bottom support member, the top support member is fixedly installed above the pressure-bearing shell, the bottom support member is fixedly installed below the pressure-bearing shell, the bottom end of the fuel lifting mechanism is fixedly connected with a guide rod, and the bottom support member is provided with a bottom guide hole for the guide rod to penetrate through.

4. The high temperature reactor reciprocating type fuel lifting device according to claim 3, wherein the driving mechanism comprises a motor and a driver, an output end of the motor is connected with an input end of the driver, an output end of the driver is connected with a lead screw, screw holes for the lead screw to penetrate through are formed in the top head and the top support, and a lower end of the lead screw is connected to an upper end of the fuel lifting mechanism through a bearing.

5. The high temperature reactor reciprocating type fuel lifting device according to claim 4, wherein the fuel lifting mechanism comprises a plurality of sliding blocks which are detachably connected with each other in a vertical direction, each sliding block is provided with a group of ball inlet and ball outlet, the uppermost sliding block is connected with a lead screw through a bearing, and the lowermost sliding block is fixedly connected with a guide rod.

6. The high temperature stack reciprocating fuel lifting device of claim 5, wherein the adjacent two sliding blocks are connected through screw threads.

7. The high temperature reactor reciprocating type fuel lifting device according to claim 6, wherein a top shaft is fixedly arranged at the upper end of the sliding block, an external thread is arranged on the top shaft, a bottom groove is arranged at the lower end of the sliding block, an internal thread matched with the external thread of the top shaft is arranged in the bottom groove, two adjacent sliding blocks are connected through a thread between the top shaft and the bottom groove, a guide rod is fixedly connected in the bottom groove of the sliding block at the lowest end, and the top shaft of the sliding block at the highest end is connected with a lead screw through a bearing.

8. The high temperature reactor reciprocating fuel lifting device as claimed in any one of claims 5 to 7, wherein the sliding block is made of carbon fiber.

9. The high temperature reactor reciprocating type fuel lifting device according to any one of claims 5 to 7, wherein the ball inlets of two adjacent sliding blocks are equally spaced, the ball outlets of two adjacent sliding blocks are equally spaced, the two adjacent first ball through holes on the side support are equally spaced, and the two adjacent second ball through holes on the side support are equally spaced.

10. A fuel lifting method using the high temperature stack reciprocating type fuel lifting apparatus according to any one of claims 1 to 9, comprising the steps of:

s1, in an initial position, a ball inlet pipe is communicated with a ball inlet of a slider at the lowest end, each first ball passing through hole is communicated with a ball inlet of a corresponding slider, and a first fuel ball enters from the ball inlet pipe, passes through a pressure-bearing shell and enters a ball passing channel of the slider at the lowest end in a fuel lifting mechanism through a side supporting piece during loading;

s2, the driving mechanism drives the fuel lifting mechanism to move upwards to drive the first fuel balls to move upwards synchronously, and when the sliding block at the lowest end moves to be communicated with the first second ball passing through hole of the side supporting piece, the first fuel balls enter the first second ball passing through hole and roll to the first ball passing through hole along the transmission pipe;

s3, the driving mechanism drives the fuel lifting mechanism to move downwards to an initial position, the first ball passing through hole is communicated with a ball inlet of the second sliding block, the first fuel ball enters a ball passing channel of the second sliding block, and meanwhile, the second fuel ball enters the ball passing channel of the sliding block at the lowest end from the ball inlet pipe;

s4, the driving mechanism drives the fuel lifting mechanism to move upwards to drive the first fuel ball and the second fuel ball to move upwards synchronously, and when the second sliding block moves to be communicated with a second ball passing through hole of the side supporting piece, the first fuel ball enters the second ball passing through hole and rolls to the second first ball passing through hole along the transmission pipe; meanwhile, when the slide block at the lowest end moves to be communicated with the first second ball passing through hole of the side support, the second fuel ball enters the first second ball passing through hole and rolls to the first ball passing through hole along the transmission pipe;

and S5, driving the fuel lifting mechanism to continuously reciprocate up and down by the driving mechanism until the fuel balls are conveyed to the ball outlet pipe, penetrate through the pressure-bearing shell and then are conveyed to a target position.

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