Method and device for dredging ball path of fuel loading and unloading system of high-temperature gas cooled reactor

Abstract

The invention discloses a method and a device for dredging a ball path of a high-temperature gas cooled reactor fuel loading and unloading system, and relates to the technical field of ball path dredging of the high-temperature gas cooled reactor fuel loading and unloading system. Comprising a control system, a pipe feeding and coiling assembly, a movable cart, a suction filtering assembly, a ball taking device and element, a portable shielding tank body, an operation box body, a commutator body and a monitor body. Wherein the control system is responsible for controlling the whole set of equipment; the suction filtering assembly is connected with the pipe feeding and coil pipe assembly through a metal hose, the pipe feeding and coil pipe assembly is installed on a movable cart, the pipe feeding and coil pipe assembly is connected with the commutator body through a pipeline, and treated spherical elements or broken balls can be conveniently transferred through the portable shielding tank; the equipment is light in weight, small in size and convenient to transfer through an elevator; the suction dredging device is in butt joint with the ball taking device or the ball taking tee joint in the negative pressure operation box to be disassembled and assembled, and the whole working process is closed.

Description

Technical Field

[0001] The invention relates to the technical field of ball path dredging in a high temperature gas-cooled reactor fuel loading and unloading system, and in particular to a method and device for dredging the ball path of a high temperature gas-cooled reactor fuel loading and unloading system. Background Art

[0002] The fuel loading and unloading system of the high-temperature gas-cooled reactor demonstration project is one of the key systems to achieve and ensure the continuous operation of the reactor. It can continuously load, circulate and unload spherical fuel elements during the operation of the reactor. During the operation of the fuel loading and unloading system, it is inevitable that spherical fuel elements will get stuck or piled up inside the pipeline. Since the fuel elements have extremely high radioactivity, personnel cannot approach them and can only use the ball suction and dredging device to remove the jams and stored balls.

[0003] In view of the above problems, the present invention designs a ball path suction and dredging device to achieve the functions of unblocking and removing stored balls. At the same time, it optimizes the equipment in terms of strong operability, high reliability, good radiation resistance, and convenient remote control and monitoring, so as to quickly and efficiently solve the problems of spherical fuel elements being stuck and accumulated inside the pipeline. Summary of the invention

[0004] In view of the fact that the existing suction dredging prototypes are complex to operate and have low reliability, a new device needs to be designed to improve operability and reliability. A method and device for dredging the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system are proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: Preparation stage: check and confirm that the control system, the suction and filtration assembly, the pipe delivery coil assembly and the mobile cart equipment are connected and in good condition;

[0006] Equipment connection: Connect the suction hose to the pipeline of the fuel loading and unloading system, making sure its front end can reach the blocked position;

[0007] Start suction: turn on the high-pressure fan to create a negative pressure environment, and start the filter barrel to collect dust;

[0008] Pushing the hose: Use the servo motor to drive the pinch roller to push the suction hose until it reaches the jammed part;

[0009] Unblocking: Use negative pressure to suck out the jam, and push the hose to hit the fuel element to help unblock it;

[0010] Fuel recovery: The extracted fuel elements are directed into portable shielded tanks for storage;

[0011] Process monitoring: Operators observe through monitors and can intervene manually;

[0012] End of operation: turn off the fan, withdraw the hose, disconnect the equipment, and perform equipment maintenance;

[0013] Subsequent processing: Transfer the collected fuel elements to a safe area for further processing.

[0014] As a preferred solution of the method for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system described in the present invention, during the fuel recovery process, the direction is switched by a commutator to ensure that the fuel elements enter the shielding tank correctly.

[0015] A device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system, applied to a method for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system as described in any one of the claims, comprising a control system, a pipe delivery coil assembly, a mobile cart, a suction filter assembly, a ball retriever and components, a portable shielding tank, an operating box, a commutator body, and a monitor body;

[0016] Among them, the control system is responsible for the control of the entire set of equipment; the suction filtration assembly is connected to the delivery pipe coil assembly through a metal hose, the delivery pipe coil assembly is installed on a mobile cart, the delivery pipe coil assembly is connected to the commutator body through a pipeline, one of the outlets of the commutator body is connected to a portable shielding tank, and another outlet of the commutator body is connected to an operating box, and the operating box is connected to the ball retriever and the components through a three-way connection.

[0017] As a preferred solution of the device for dredging the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system described in the present invention, the pipe delivery coil assembly includes a sealed housing, an integrated transmission box, a reduction motor, a suction pipe outlet, a negative pressure suction port, a coil member, a suction hose and a pipe delivery member;

[0018] Among them, the pipe delivery component and the pipe coil component share a set of the reduction motor for driving, the pipe delivery component and the pipe coil component are both installed in the sealed shell, the sealed shell and the integrated transmission box are both fixedly installed on the top of the mobile cart, and the suction pipe outlet is connected to the commutator body through a pipeline accessory.

[0019] As a preferred solution of the device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system of the present invention, the mobile cart comprises a hook, a balancer, a negative pressure device body, a suspension arm, a second tightening pin, a ball valve, a second caster, a trolley frame and a hook;

[0020] Among them, the upper end of the trolley frame is used to install the pipe delivery coil assembly, the lower layer of the trolley frame is used to install the negative pressure device body and the suction filter assembly, the lower end of the trolley frame is equipped with two casters, the suspension arm is installed at the front end of the trolley frame, the tightening pin two is installed at the connection between the suspension arm and the trolley frame, and the balancer is installed at the front end of the suspension arm.

[0021] As a preferred solution of the device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system of the present invention, the suction filter assembly includes a high-pressure fan, a filter barrel and a lead barrel;

[0022] Among them, the high-pressure fan, filter barrel and lead barrel are all installed on a mobile cart, the high-pressure fan is connected to the filter barrel through an exhaust port, and the filter barrel is installed in the lead barrel.

[0023] As a preferred solution of the device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system of the present invention, wherein: the portable shielding tank comprises a shielding tank cover, a shielding tank body and casters;

[0024] The shielding tank body is a cylindrical cavity, the caster wheel is installed at the lower end of the shielding tank body, and the shielding tank cover is installed at the opening of the shielding tank body.

[0025] As a preferred solution of the device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system described in the present invention, the operating box includes a tightening pin, a flange interface, a hinge, a movable cover, an operating box frame, a side inlet of a ball taker, an acrylic plate, operating gloves, a negative pressure device interface, a fixing flange, a sealing end cover and a quick-pull lock;

[0026] Among them, the flange interface part is installed on the operating box body through a fixed flange, the upper end of the flange interface part is connected to the commutator body, the lower end of the flange interface part is connected to the tee of the ball remover and the element, the tightening pin is installed on the flange interface part, the acrylic plate is fixedly installed on the operating box frame, the operating gloves are installed on the acrylic plate, the movable cover is connected to the operating box frame through a hinge, and the quick pull lock is installed on the movable cover.

[0027] As a preferred solution of the device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system described in the present invention, the negative pressure device interface is opened on the front side of the operating box, and the sealing end cover is located at the negative pressure device interface.

[0028] As a preferred solution of the device for clearing the ball path of a high-temperature gas-cooled reactor fuel loading and unloading system described in the present invention, two outlets are provided on the commutator body, one of which is connected to the portable shielding tank, and the other is connected to the operating box.

[0029] The beneficial effects of the present invention are as follows: the present invention can conveniently transfer the processed spherical elements or broken balls through a portable shielding tank; the equipment is light in weight and small in size, and is convenient for transportation by elevator; the suction and dredging device is connected and disassembled with the ball remover or the ball removing tee in the negative pressure operation box, and is fully closed during operation to prevent leakage of graphite dust; the delivery pipe and coil mechanism are integrated into one design to ensure coordinated operation and easy maintenance; the suction system has a large flow rate and strong negative pressure capacity, with a suction capacity of more than 300g; the special suction nozzle design of the suction main pipe makes it not easy to be stuck by the spherical elements in the pipe during dredging; in addition, the device can be remotely controlled by a computer outside the cabin, and is equipped with a camera and listening equipment to achieve real-time remote monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative labor.

[0031] Figure 1 This is a schematic diagram of the overall structure of the suction and dredging device in the present invention.

[0032] Figure 2 It is a schematic diagram of the structure of the pipe delivery coil assembly in the present invention.

[0033] Figure 3 It is a schematic diagram of the internal structure of the delivery pipe coil assembly in the present invention.

[0034] Figure 4 It is an overall schematic diagram of the mobile cart in the present invention.

[0035] Figure 5 It is a front cross-sectional view of the suction filter assembly in the present invention.

[0036] Figure 6 It is an overall schematic diagram of the portable shielding tank in the present invention.

[0037] Figure 7 It is a partial cross-sectional view of the portable shielding tank in the present invention.

[0038] Figure 8 It is a schematic diagram of the overall structure of the operating box in the present invention.

[0039] Fig. 9 It is a schematic diagram of the internal structure of the operating box in the present invention.

[0040] Figure numerals: 100, control system; 200, pipe delivery coil assembly; 300, mobile cart; 400, suction and filtration assembly; 500, ball retriever and components; 600, portable shielding tank; 700, operating box; 800, commutator body; 900, monitor body; 201, sealing shell; 202, integrated transmission box; 203, reduction motor; 204, suction pipe outlet; 205, negative pressure suction port; 206, coil; 207, suction hose; 208, pipe delivery; 301, hook; 302, balancer; 303, negative pressure device body; 304, suspension arm ; 305, tightening pin two; 306, ball valve; 307, caster two; 308, trolley frame; 309, hook; 401, high-pressure fan; 402, filter barrel; 403, lead barrel; 601, shielding tank cover; 602, shielding tank body; 603, caster one; 701, tightening pin one; 702, flange interface; 703, hinge; 704, movable cover; 705, operating box frame; 706, side inlet of ball remover; 707, acrylic plate; 708, operating gloves; 709, negative pressure device interface; 710, fixing flange; 711, sealing end cover; 712, quick-pull lock. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0044] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0045] Example 1, reference Figures 1 to 9 , which is the first embodiment of the present invention, provides a device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system, comprising:

[0046] S1, preparation stage: first ensure that all equipment is in normal working condition, and key components such as control system 100, suction filter assembly 400, pipe delivery coil assembly 200, mobile cart 300 have been connected;

[0047] S2. Equipment connection: connect the suction hose 207 to the pipeline of the fuel loading and unloading system through the ball removal tee or the inlet of the ball removal device; at this time, the front end of the suction hose 207 should be able to reach the position where the fuel element is blocked;

[0048] S3, start suction: start the high-pressure fan 401, and establish a negative pressure environment from the suction filter assembly 400 to the pipe delivery coil assembly 200 through the metal hose; the filter barrel 402 starts to collect graphite dust and performs high-precision filtering on the exhaust gas;

[0049] S4, pushing the hose: using the pinching rollers driven by the servo motor in the pipe delivery member 208 to push the suction hose 207 until its front end reaches the position of the blocked fuel element; during this process, the distance between the rollers can be adjusted by the built-in adjustment mechanism to ensure that the hose is pushed firmly;

[0050] S5, clearing the jam: once the suction hose 207 is in place, the jammed fuel element is sucked into the hose by negative pressure suction, thereby clearing the jam; if further processing is required, the suction hose 207 is continuously pushed forward to collide with the spherical element to help clear the jam;

[0051] S6, fuel recovery: the sucked fuel elements will be guided to the portable shielding tank 600 for storage; during the operation, the direction is switched by the commutator body 800 to ensure that the fuel elements enter the shielding tank correctly;

[0052] S7, process monitoring: During the whole process, the operator can observe the operation status through the monitor on the operation box and perform necessary manual intervention through the operating gloves 708;

[0053] S8, end of operation: after the dredging is completed, the high-pressure blower 401 is turned off, the suction hose 207 is retracted, and all connections are disconnected; the equipment is maintained, such as replacing worn rollers, cleaning the filter barrel 402, etc.;

[0054] S9. Subsequent processing: Transfer the collected fuel elements to a designated safe area for subsequent processing.

[0055] Example 2, reference Figure 1 to Figure 6, which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that it includes a control system 100, a pipe delivery coil assembly 200, a mobile cart 300, a suction filter assembly 400, a ball retriever and element 500, a portable shielding tank 600, an operating box 700, a commutator body 800, and a monitor body 900; wherein the control system 100 is responsible for controlling the entire set of equipment; the suction filter assembly 400 is connected to the pipe delivery coil assembly 200 through a metal hose, the pipe delivery coil assembly 200 is installed on the mobile cart 300, the pipe delivery coil assembly 200 is connected to the commutator body 800 through a pipeline, one of the outlets of the commutator body 800 is connected to the portable shielding tank 600, and another outlet of the commutator body 800 is connected to the operating box 700, and the operating box 700 and the ball retriever and element 500 are connected in a three-way manner.

[0056] The control system 100 includes various module control execution elements, sensor elements, supporting control elements, and video monitoring modules. Remote control can be achieved by controlling the monitor body 900 through the control system 100.

[0057] The pipe delivery coil assembly 200 includes a sealed shell 201, an integrated transmission box 202, a reduction motor 203, a suction pipe outlet 204, a negative pressure suction port 205, a coil member 206, a suction hose 207 and a pipe delivery member 208; wherein the pipe delivery member 208 and the coil member 206 share a set of reduction motors 203 for driving, the pipe delivery member 208 and the coil member 206 are both installed in the sealed shell 201, the sealed shell 201 and the integrated transmission box 202 are both fixedly installed on the top of the mobile cart 300, and the suction pipe outlet 204 is connected to the commutator body 800 through pipeline accessories.

[0058] The delivery coil assembly 200 is used to deliver the suction hose 207 from the ball removal tee or the ball removal device inlet to the component jam position inside the fuel system pipeline, and then use negative pressure suction to remove the component to achieve unblocking or continue to clamp and deliver the collision spherical component forward to achieve unblocking.

[0059] The pipe delivery component 208 is composed of two pairs of clamping rollers to realize the forward delivery and backward retraction of the suction hose 207, and the roller spacing can be adjusted with the built-in adjustment mechanisms, so that the two rollers tightly press the suction hose 207, providing friction for the pushing and pulling out of the suction hose 207. The rollers are of a rubber-coated structure, and the outer friction surface is made of rubber material and is fixed to the core shaft by vulcanization. The rubber rim has a semicircular groove that matches the suction tube. The rollers are driven by a servo motor and are configured to perform real-time measurement by a rotary transformer and the hose delivery roller. The rollers adopt a quick disassembly and assembly structure to facilitate quick replacement of worn rollers, and the reel of the coil component 206 adopts a quick disassembly and assembly structure to facilitate quick replacement of the suction tube.

[0060] The integrated transmission box 202 is internally provided with transmission mechanical structures such as a mechanical clutch and a safety torque limiter to ensure the coordination and consistency of the coil and the delivery pipe; the mechanical clutch is a double clutch structure, so that the suction hose 207 can always ensure that the capillary is tightly wound around the spoke wheel assembly during the pushing and pulling process. At the same time, a torque limiter is installed to provide overload protection for the equipment and the capillary to avoid excessive pulling force.

[0061] The sealed shell 201 is used to prevent dust carried by the outer wall of the suction hose 207 from entering the environment. The entire pipe delivery coil assembly 200 is fixedly installed on the top of the mobile cart 300. The suction pipe outlet 204 is connected to the pipeline accessory, and the other end of the pipeline accessory is connected to the commutator body 800.

[0062] The pipeline accessories are mainly used to connect the suction filter assembly 400, the delivery pipe coil assembly 200, the commutator body 800, the operating box 700, the negative pressure device body 303, the portable shielding tank 600, etc., wherein the negative pressure device body 303 and the operating box 700 are connected by a general air pipe, and the interface adopts an air circuit quick-plug interface, wherein the suction filter assembly 400, the delivery pipe coil assembly 200, the commutator body 800, the operating box 700, the portable shielding tank 600, etc. are connected by a stainless steel metal braided hose, the inner diameter of the hose is about 65mm, and the inner wall surface is not folded, which can ensure the smooth passage of graphite balls with a diameter of 61mm.

[0063] The mobile cart 300 includes a hook 301, a balancer 302, a negative pressure device body 303, a suspension arm 304, a tightening pin 305, a ball valve 306, a caster 307, a trolley frame 308 and a hook 309; wherein, the upper end of the trolley frame 308 is used to install the pipe delivery coil assembly 200, the lower layer of the trolley frame 308 is used to install the negative pressure device body 303 and the suction filter assembly 400, the lower end of the trolley frame 308 is installed with a caster 307, the suspension arm 304 is installed at the front end of the trolley frame 308, the tightening pin 305 is installed at the connection between the suspension arm 304 and the trolley frame 308, and the balancer 302 is installed at the front end of the suspension arm 304.

[0064] Among them, the trolley frame 308 is made of aluminum profiles to reduce the overall weight. The trolley frame 308 adopts a multi-layer design. The top layer is used to install the delivery pipe coil assembly 200, and the lower layer is used to install the negative pressure device body 303 and the suction filter assembly 400. Handrails are set on the side to facilitate the staff to push and pull. Four movable casters 307 are installed on the bottom plate of the trolley frame 308. The movable casters 307 adopt two fixed wheels and two universal wheels. The casters 307 are equipped with foot brakes.

[0065] The suspension arm 304 is installed at the front end of the trolley. The suspension arm 304 can rotate around and the height can be raised and lowered. It is fixed by tightening the pin 2 305. A balancer 302 is hung at the front end of the suspension arm 304 to reduce the labor intensity of the operator.

[0066] The rest of the structure is the same as that of Example 1.

[0067] Example 3, reference Figures 1 to 9 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a suction filter assembly 400 includes a high-pressure fan 401, a filter barrel 402 and a lead barrel 403; wherein the high-pressure fan 401, the filter barrel 402 and the lead barrel 403 are all installed on the mobile cart 300, the high-pressure fan 401 is connected to the filter barrel 402 through the exhaust port, and the filter barrel 402 is installed in the lead barrel 403.

[0068] The high-pressure fan 401 is the power source of the suction filter assembly 400, and is used to provide negative pressure and negative suction flow. The high-pressure fan 401 is connected to the filter barrel 402 through the exhaust port. The filter barrel 402 is installed in the lead barrel 403. The filter barrel 402 is used to collect graphite dust and filter the exhaust gas with high precision.

[0069] The filter barrel 402 as a whole can be conveniently taken out and replaced when the cover of the lead barrel 403 is opened. The lead barrel 403 is mainly used to isolate the radioactive material in the filter barrel 402 to reduce the radiation exposure of personnel. The entire suction filter assembly 400 is fixedly installed on the mobile cart 300. The top outlet of the suction filter assembly 400 is connected to a metal hose, and the other end of the metal hose is connected to the negative pressure suction port 205 of the pipe delivery coil assembly 200.

[0070] The portable shielding tank 600 includes a shielding tank cover 601, a shielding tank body 602 and a caster 603; the shielding tank body 602 is a cylindrical cavity, the caster 603 is installed at the lower end of the shielding tank body 602, and the shielding tank cover 601 is installed at the opening of the shielding tank body 602.

[0071] The middle of the shielding tank body 602 is a cylindrical cavity with a diameter of 200 mm and a height of 120 mm, which can accommodate 14 graphite balls. Four casters 603 are installed at the bottom of the shielding tank body 602 to facilitate the transportation of the graphite balls.

[0072] The operating box 700 includes a tightening pin 701, a flange interface part 702, a hinge 703, a movable cover 704, an operating box frame 705, a side inlet 706 of a ball remover, an acrylic plate 707, an operating glove 708, an interface 709 of a negative pressure device, a fixed flange 710, a sealing end cover 711 and a quick-pull lock 712; wherein, the flange interface part 702 is installed on the operating box 700 through the fixed flange 710, the upper end of the flange interface part 702 is connected to the commutator body 800, the lower end of the flange interface part 702 is connected to the three-way connection of the ball remover and the element 500, the tightening pin 701 is installed on the flange interface part 702, the acrylic plate 707 is fixedly installed on the operating box frame 705, the operating glove 708 is installed on the acrylic plate 707, the movable cover 704 is connected to the operating box frame 705 through the hinge 703, and the quick-pull lock 712 is installed on the movable cover 704.

[0073] The flange interface part 702 can slide up and down to facilitate the disassembly of the flange cover of the ball remover and the component 500. The tightening pin 701 is used to fix the flange 710 interface part 702, and an observation window is provided on the flange interface part 702 to facilitate monitoring whether the graphite ball is taken out. The acrylic plate 707 is made of highly transparent material. The acrylic plate 707 is fixed on the operating box frame 705 and is lined with a high-rebound sealing strip. Glove holes are provided on both sides of the acrylic plate 707 for installing operating gloves 708 to facilitate the disassembly and assembly of the flange cover. The operating box body 700 adopts a structural form in which the upper part is fixed and the lower part is open.

[0074] The negative pressure device interface 709 is opened on the front side of the operating box 700, and the sealing end cover 711 is located at the negative pressure device interface 709; wherein, a negative pressure device interface 709 is reserved on the front side of the operating box 700 to be connected with the negative pressure device body 303 to ensure that the operating box 700 maintains a negative pressure state during the dredging work. An interface is also reserved on the front side of the operating box 700, which can be used when dredging is required from the side of the ball retriever. When it is not needed, this interface is sealed with a sealing end cover 711.

[0075] The commutator body 800 is provided with two outlets, one of which is connected to the portable shielding tank 600 , and the other of which is connected to the operating box 700 .

[0076] The rest of the structure is the same as that of Example 2.

[0077] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0078] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system, characterized in that: include, Preparation stage: Check and confirm that the control system, suction and filtration components, pipe delivery coil components and mobile cart equipment are connected and in good condition; Equipment connection: Connect the suction hose to the pipeline of the fuel loading and unloading system, making sure its front end can reach the blocked position; Start suction: turn on the high-pressure fan to create a negative pressure environment, and start the filter barrel to collect dust; Pushing the hose: Use the servo motor to drive the pinch roller to push the suction hose until it reaches the jammed part; Unblocking: Use negative pressure to suck out the jam, and push the hose to hit the fuel element to help unblock it; Fuel recovery: The extracted fuel elements are directed into portable shielded tanks for storage; Process monitoring: Operators observe through monitors and can intervene manually; End of operation: turn off the fan, withdraw the hose, disconnect the equipment, and perform equipment maintenance; Subsequent processing: Transfer the collected fuel elements to a safe area for further processing.

2. A method for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 1, characterized in that: in, During the fuel recovery process, the direction is switched by the reverser to ensure that the fuel elements enter the shielding tank correctly.

3. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system, applied to a method for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in any one of claims 1 or 2, characterized in that: It comprises a control system (100), a pipe delivery coil assembly (200), a mobile cart (300), a suction filter assembly (400), a ball retriever and components (500), a portable shielding tank (600), an operating box (700), a commutator body (800), and a monitor body (900); The control system (100) is responsible for controlling the entire set of equipment; the suction filter assembly (400) is connected to the pipe delivery coil assembly (200) via a metal hose; the pipe delivery coil assembly (200) is installed on a mobile cart (300); the pipe delivery coil assembly (200) is connected to the commutator body (800) via a pipeline; one of the outlets of the commutator body (800) is connected to a portable shielding tank (600); another outlet of the commutator body (800) is connected to an operating box (700); and the operating box (700) is connected to the ball retriever and the element (500) via a three-way connection.

4. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 3, characterized in that: The pipe delivery coil assembly (200) comprises a sealed housing (201), an integrated transmission box (202), a reduction motor (203), a suction pipe outlet (204), a negative pressure suction port (205), a coil member (206), a suction hose (207) and a pipe delivery member (208); The pipe delivery member (208) and the pipe coil member (206) are driven by a common set of the reduction motor (203); the pipe delivery member (208) and the pipe coil member (206) are both installed in the sealed shell (201); the sealed shell (201) and the integrated transmission box (202) are both fixedly installed on the top of the mobile cart (300); the suction pipe outlet (204) and the commutator body (800) are connected via a pipeline accessory.

5. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 4, characterized in that: The mobile cart (300) comprises a hook (301), a balancer (302), a negative pressure device body (303), a suspension arm (304), a second tightening pin (305), a ball valve (306), a second caster (307), a trolley frame (308) and a hook (309); The upper end of the trolley frame (308) is used to install the pipe delivery coil assembly (200), the lower layer of the trolley frame (308) is used to install the negative pressure device body (303) and the suction filter assembly (400), the lower end of the trolley frame (308) is installed with a second caster (307), the suspension arm (304) is installed at the front end of the trolley frame (308), the tightening pin (305) is installed at the connection between the suspension arm (304) and the trolley frame (308), and the balancer (302) is installed at the front end of the suspension arm (304).

6. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 5, characterized in that: The suction filter assembly (400) comprises a high-pressure fan (401), a filter barrel (402) and a lead barrel (403); The high-pressure fan (401), the filter barrel (402) and the lead barrel (403) are all installed on the mobile cart (300), the high-pressure fan (401) is connected to the filter barrel (402) through an air outlet, and the filter barrel (402) is installed in the lead barrel (403).

7. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 6, characterized in that: The portable shielding tank (600) comprises a shielding tank cover (601), a shielding tank body (602) and a caster (603); The shielding tank body (602) is a cylindrical cavity, the caster wheel (603) is installed at the lower end of the shielding tank body (602), and the shielding tank cover (601) is installed at the opening of the shielding tank body (602).

8. The device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 3, characterized in that: The operating box (700) comprises a tightening pin (701), a flange interface (702), a hinge (703), a movable cover (704), an operating box frame (705), a side inlet of a ball taker (706), an acrylic plate (707), an operating glove (708), a negative pressure device interface (709), a fixing flange (710), a sealing end cover (711) and a quick-pull lock (712); The flange interface part (702) is installed on the operating box (700) through a fixed flange (710), the upper end of the flange interface part (702) is connected to the commutator body (800), the lower end of the flange interface part (702) is connected to the three-way joint of the ball remover and the element (500), the tightening pin (701) is installed on the flange interface part (702), the acrylic plate (707) is fixedly installed on the operating box frame (705), the operating gloves (708) are installed on the acrylic plate (707), the movable cover (704) is connected to the operating box frame (705) through a hinge (703), and the quick-pull lock (712) is installed on the movable cover (704).

9. A device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system as claimed in claim 8, characterized in that: The negative pressure device interface (709) is opened on the front side of the operation box (700), and the sealing end cover (711) is located at the negative pressure device interface (709).

10. The device for clearing the ball path of a high temperature gas-cooled reactor fuel loading and unloading system according to claim 9, characterized in that: The commutator body (800) is provided with two outlets, one of which is connected to the portable shielding tank (600), and the other of which is connected to the operating box (700).

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