High temperature gas-cooled reactor suction device

Abstract

The present invention relates to the field of reactor engineering technology, and provides a high-temperature gas-cooled reactor suction device, including: a suction device, a filtering device and a suction hose connected in sequence; a reversing mechanism, including a first shell, a reversing assembly and a first driving mechanism, the first shell is provided with a first discharge port, a first pipe inlet and a first pipe outlet, the reversing assembly is arranged in the first shell and can be switched between a first position and a second position, and the reversing assembly is provided with a connecting channel; a pipe delivery mechanism is arranged at the first pipe inlet and is used to deliver the suction hose. The maintenance personnel only need to connect the first pipe outlet of the first shell to the maintenance interface of the equipment to be repaired, and then remotely control the suction device, the first driving mechanism and the second driving mechanism to perform corresponding actions to complete the dredging operation, without dismantling the equipment or disassembling the pipeline, reducing the disassembly and assembly steps, and making the operation more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor engineering, and particularly to a suction device for a high-temperature gas-cooled reactor. Background Art

[0002] The pebble bed high-temperature gas-cooled reactor operates with an on-line refueling method in which spherical elements pass through multiple times. During the on-line refueling process, collisions and frictions between spherical elements, between spherical elements and steel equipment, and between spherical elements and pipeline elements are likely to generate dust and debris. The flowing spherical elements may be blocked by debris and accumulated dust. Since the fuel handling system equipment and pipelines for on-line refueling are complex, once a blockage failure occurs in the fuel handling system, it is necessary to disassemble the equipment or remove the pipeline to take out the blocked spherical elements, debris, and dust. The operation is cumbersome, time-consuming and laborious, and maintenance personnel are prone to the risk of radioactive irradiation. Summary of the Invention

[0003] The present invention provides a suction device for a high-temperature gas-cooled reactor, which is used to solve the defect that when taking out blocked spherical elements, debris, and dust in the prior art, it is necessary to disassemble the equipment or remove the pipeline, and the operation is cumbersome, time-consuming and laborious. On the premise of reducing the disassembly and assembly steps of the equipment to be repaired and reducing the on-site working time of maintenance personnel, the effect of dredging spherical elements, debris, and dust is achieved.

[0004] The present invention provides a suction device for a high-temperature gas-cooled reactor, including:

[0005] A suction device, a filtering device, and a suction hose connected in sequence, the inner diameter of the suction hose being smaller than the diameter of the spherical element;

[0006] A commutation mechanism, including a first housing, a commutation component, and a first driving mechanism. The first housing is provided with a first discharge port, a first inlet pipe for the suction hose to extend into, and a first outlet pipe for connecting to the maintenance interface of the equipment to be repaired. The commutation component is arranged in the first housing and can be switched between a first position and a second position. The commutation component is provided with a connection channel. When the commutation component is in the first position, the connection channel communicates the first inlet pipe and the first outlet pipe. When the commutation component is in the second position, the connection channel communicates the first inlet pipe and the first discharge port. The first driving mechanism is connected to the commutation component and is used to drive the commutation component to move;

[0007] A pipe feeding mechanism is arranged at the first inlet pipe. The pipe feeding mechanism includes a driving wheel, a driven wheel, and a second driving mechanism. The driving wheel and the driven wheel are both rotatably arranged, and there is a gap between them for the suction hose to pass through. The second driving mechanism is connected to the driving wheel and is used to drive the driving wheel to rotate.

[0008] A suction device for a high-temperature gas-cooled reactor provided according to the present invention further includes a storage container, and the first discharge port is connected to the storage container through a pipeline.

[0009] A suction device for a high-temperature gas-cooled reactor provided according to the present invention further includes a gas source device, and the gas source device is connected to the first discharge port.

[0010] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, the filtering device includes a second housing and a filter element. The second housing includes a suction port, a second discharge port, and a feed port. The suction port is connected to the suction device, the filter element is arranged at the suction port, the feed port is connected to the suction hose, and the second discharge port is connected to the storage container for discharging materials to the storage container.

[0011] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, it further includes a gas source device. The second housing is provided with a first air inlet, and the first air inlet is connected to the gas source device.

[0012] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, the outer circumferential wall of the driving wheel is provided with teeth, and the outer circumferential wall of the driven wheel is provided with an annular groove for placing the suction hose.

[0013] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, it further includes a detection device. The detection device is arranged at the first inlet pipe for detecting the position of the material.

[0014] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, it further includes a coiled pipe mechanism. The coiled pipe mechanism includes a reel for winding and unwinding the suction hose, and the filtering device is communicated with the suction hose through the reel.

[0015] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, the coiled pipe mechanism further includes a fourth housing. The reel is arranged in the fourth housing, and the fourth housing is provided with a second outlet pipe for the suction hose to extend out.

[0016] For a suction device for a high-temperature gas-cooled reactor provided according to the present invention, the connection channel includes a ball suction pipe and a ball outlet pipe. When the commutation assembly is in the first position, the two ends of the ball suction pipe are respectively connected to the first inlet pipe and the first outlet pipe. When the commutation assembly is in the second position, the two ends of the ball outlet pipe are respectively connected to the first inlet pipe and the first discharge port.

[0017] The high-temperature gas-cooled reactor suction device provided by the present invention, during use, opens the maintenance interface of the device to be maintained, and connects the first outlet pipe of the commutation mechanism to the maintenance interface. The first driving mechanism drives the commutation component to move to the first position, and the connection channel of the commutation component communicates the first inlet pipe and the first outlet pipe. The second driving mechanism of the pipe feeding mechanism drives the driving wheel to rotate. Under the driving action of the driving wheel, the suction hose between the driving wheel and the driven wheel sequentially passes through the first inlet pipe, the connection channel, the first outlet pipe and the maintenance interface and enters the device to be maintained.

[0018] Through the suction action of the suction device, the dust and debris with a particle size smaller than the inner diameter of the suction hose in the device to be maintained flow along the suction hose and are finally blocked and collected by the flow-through device, thereby completing the dredging of the dust and debris at the blocked position of the device to be maintained.

[0019] The spherical components or large-sized debris with a diameter larger than the inner diameter of the suction hose in the device to be maintained are adsorbed at the nozzle of the suction hose. The second driving mechanism of the pipe feeding mechanism drives the driving wheel to reverse. Under the driving of the driving wheel, the suction hose sequentially exits from the device to be maintained, the maintenance interface, the first outlet pipe, the connection channel and the first inlet pipe. After retreating to the upstream of the first inlet pipe, the second driving mechanism stops rotating. The first driving mechanism drives the commutation component to move to the second position, and the connection channel of the commutation component communicates the first inlet pipe and the first discharge port. The suction device stops suction, and the suction hose loses suction on the spherical components or large-sized debris. The spherical components or large-sized debris fall from the nozzle of the suction hose and enter the first discharge port through the first inlet pipe and the connection channel, thereby completing the dredging of the spherical components and large-sized debris at the blocked position of the device to be maintained. If the number of blocked spherical components or large-sized debris is large, the device to be maintained can be sucked and dredged multiple times by using the suction hose. After the dredging is completed, the first outlet pipe and the maintenance interface are disassembled, and the maintenance interface is closed. Since it is necessary to use the pipe feeding mechanism to push the suction hose into the device to be maintained and to pull the suction hose out of the device to be maintained, and the spherical components and large-sized debris are adsorbed by the suction hose and guided to the first discharge port by the commutation component, the problem that the spherical components are blocked between the driving wheel and the driven wheel and cause failures of the high-temperature gas-cooled reactor suction device can be avoided.

[0020] With such a setting, when dredging the device to be maintained, the maintenance personnel only need to connect the first outlet pipe of the first housing to the maintenance interface of the device to be maintained, and then remotely control the suction device, the first driving mechanism and the second driving mechanism to perform corresponding actions to complete the dredging operation, without disassembling the device or disassembling the pipeline, reducing the disassembly and assembly steps, making the operation of the dredging operation more convenient, and at the same time, the operation time of the maintenance personnel on site is less, which can effectively reduce the working time of the maintenance personnel on site and avoid excessive irradiation of the maintenance personnel. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a high-temperature gas-cooled reactor suction device provided in an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of a commutation mechanism provided in an embodiment of the present invention;

[0024] Figure 3 It is a schematic structural diagram of a commutation component of the commutation mechanism in the first position provided in an embodiment of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a commutation component of the commutation mechanism in the second position provided in an embodiment of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a pipe feeding mechanism provided in an embodiment of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the cooperation structure of a driving wheel and a driven wheel provided in an embodiment of the present invention;

[0028] Figure 7 It is a schematic structural diagram of a filtering device provided in an embodiment of the present invention;

[0029] Figure 8 It is a schematic structural diagram of a reel of a coil pipe mechanism provided in an embodiment of the present invention;

[0030] Figure 9 It is a schematic structural diagram of a coil pipe mechanism provided in an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1. Suction device;

[0033] 2. Filtering device; 201. Second housing; 202. Filter element; 203. Suction port; 204. Second discharge port; 205. Feed port; 206. First air inlet; 207. Guide inclined surface; 208. Pipe joint;

[0034] 3. Suction hose;

[0035] 4. Reversing mechanism; 401. First housing; 402. First driving mechanism; 403. Driving gear; 404. Driven gear; 405. Ball extraction tube; 406. Ball outlet tube; 407. First outlet; 408. First inlet; 409. First outlet; 410. Second inlet; 411. First flange; 412. Second flange; 413. Socket pipe;

[0036] 5. Pipe delivery mechanism; 501. driving wheel; 502. driven wheel; 503. second driving mechanism; 504. third shell; 505. guide tube; 506. third flange; 507. movable seat; 508. elastic member; 509. adjusting nut; 510. bolt;

[0037] 6. Coil mechanism; 601. Frame; 602. Center tube; 603. Limit plate; 604. Casing; 605. Support rod; 606. Handle; 607. Through hole; 608. Third drive mechanism; 609. Box; 610. Cover; 611. Handle; 612. Observation window; 613. Second outlet; 614. Buckle;

[0038] 7. Storage container; 8. Gas source device; 9. Detection device; 10. On-site equipment area; 11. On-site interface area; 12. Maintenance equipment area; 13. Remote control area; 14. Camera device; 15. Electric control box; 16. Online pipeline; 17. Display screen; 18. Cable reel; 19. Equipment to be repaired; 20. Spherical element; 21. First tee; 22. Second tee; 23. Maintenance interface. Specific implementation method

[0039] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the prior art, due to the complexity of the equipment and pipelines of the fuel loading and unloading system for online refueling, once a jam occurs in the fuel loading and unloading system, the equipment needs to be dismantled or the pipeline needs to be removed to remove the jammed spherical elements, debris and dust. The operation is cumbersome, time-consuming and labor-intensive, and the maintenance personnel are susceptible to the risk of radioactive exposure. In order to achieve the effect of clearing the spherical elements, debris and dust while reducing the steps of disassembling and assembling the equipment to be repaired and reducing the working time of the maintenance personnel on site, an embodiment of the present invention provides a high-temperature gas-cooled reactor suction device.

[0041] The following combination Figures 1 to 9Describe the suction device of the high-temperature gas-cooled reactor provided in the embodiments of the present invention.

[0042] Specifically, the suction device of the high-temperature gas-cooled reactor includes a suction device 1, a filtering device 2, a suction hose 3, a commutation mechanism 4, and a pipe feeding mechanism 5.

[0043] Among them, the suction device 1, the filtering device 2, and the suction hose 3 are connected in sequence. Specifically, the air suction port of the suction device 1 is connected to the filtering device 2, the filtering device 2 is connected to the suction hose 3, and the suction hose 3 is used to extend into the equipment 19 to be repaired. The inner diameter of the suction hose 3 is smaller than the diameter of the spherical element 20. Optionally, the suction device 1 includes, but is not limited to, a Roots blower and an industrial vacuum cleaner.

[0044] The commutation mechanism 4 includes a first housing 401, a commutation component, and a first driving mechanism 402. The first housing 401 is provided with a first discharge port 407, a first inlet pipe opening 408, and a first outlet pipe opening 409. Among them, the first inlet pipe opening 408 is used for the suction hose 3 to extend into, and the first outlet pipe opening 409 is used to connect to the maintenance interface 23 of the equipment 19 to be repaired. The commutation component is arranged in the first housing 401 and can be switched between a first position and a second position. In other words, the commutation component is movably arranged in the first housing 401. The commutation component is provided with a connection channel. When the commutation component is in the first position, the connection channel of the commutation component communicates the first inlet pipe opening 408 and the first outlet pipe opening 409. When the commutation component is in the second position, the connection channel of the commutation component communicates the first inlet pipe opening 408 and the first discharge port 407. The first driving mechanism 402 is connected to the commutation component and is used to drive the commutation component to move.

[0045] It should be noted that in order to prevent the spherical element 20 from causing excessive irradiation to maintenance personnel, it is usually necessary to set shields for equipment and pipe sections that may be blocked, and to set interface pipe fittings upstream of the shield to avoid direct irradiation of the spherical element 20 and facilitate dredging. There are various forms of interface pipe fittings. For example, the pipe connection device for a high-temperature gas-cooled reactor disclosed in the Chinese invention patent with the publication number CN111677966A, or the first three-way joint 21 as shown in Figure 1 The maintenance interface 23 is connected to the pipe connection device or the first three-way joint 21. When dredging is required, the maintenance interface 23 can be opened, and the first outlet pipe opening 409 can be connected to the maintenance interface 23. After the maintenance is completed, the first outlet pipe opening 409 can be disassembled from the maintenance interface 23, and the maintenance interface 23 can be closed again.

[0046] The pipe feeding mechanism 5 is arranged at the first inlet pipe opening 408. The pipe feeding mechanism 5 includes a driving wheel 501, a driven wheel 502 and a second driving mechanism 503. The driving wheel 501 and the driven wheel 502 are both rotatably arranged, and there is a gap between them for the suction hose 3 to pass through. The second driving mechanism 503 is connected to the driving wheel 501 and is used to drive the driving wheel 501 to rotate.

[0047] In the high-temperature gas-cooled reactor suction device provided in the embodiment of the present invention, during use, the maintenance interface 23 of the device 19 to be maintained is opened, and the first outlet pipe opening 409 of the commutation mechanism 4 is connected to the maintenance interface 23. The first driving mechanism 402 drives the commutation component to move to the first position, and the connection channel of the commutation component communicates the first inlet pipe opening 408 and the first outlet pipe opening 409. The second driving mechanism 503 of the pipe feeding mechanism 5 drives the driving wheel 501 to rotate. Under the driving action of the driving wheel 501, the suction hose 3 between the driving wheel 501 and the driven wheel 502 sequentially passes through the first inlet pipe opening 408, the connection channel, the first outlet pipe opening 409 and the maintenance interface 23 and enters the device 19 to be maintained.

[0048] Through the suction action of the suction device 1, a suction air flow is generated in the suction hose 3. The dust and debris in the device 19 to be maintained with a particle size smaller than the inner diameter of the suction hose 3 flow along the suction hose 3 and are finally blocked and collected by the flow-through device, thereby completing the dredging of the dust and debris at the blocked position of the device 19 to be maintained.

[0049] The spherical element 20 or large-size debris with a diameter larger than the inner diameter of the suction hose 3 in the device 19 to be maintained is adsorbed at the pipe opening of the suction hose 3. The second driving mechanism 503 of the pipe feeding mechanism 5 drives the driving wheel 501 to reverse. Under the driving of the driving wheel 501, the suction hose 3 together with the spherical element 20 and large-size debris adsorbed at the pipe opening sequentially exits from the device 19 to be maintained, the maintenance interface 23, the first outlet pipe opening 409, the connection channel and the first inlet pipe opening 408. After retreating to the upstream of the first inlet pipe opening 408, the second driving mechanism 503 stops rotating. The first driving mechanism 402 drives the commutation component to move to the second position, and the connection channel of the commutation component communicates the first inlet pipe opening 408 and the first discharge port 407. The suction device 1 stops suction, and the suction hose 3 loses suction on the spherical element 20 or large-size debris. The spherical element 20 or large-size debris drops from the pipe opening of the suction hose 3 and enters the first discharge port 407 through the first inlet pipe opening 408 and the connection channel, thereby completing the dredging of the spherical element 20 and large-size debris at the blocked position of the device 19 to be maintained. If the number of blocked spherical elements 20 or large-size debris is large, the suction hose 3 can be used to perform multiple suction dredging on the device 19 to be maintained. After completing the suction dredging, the first outlet pipe opening 409 and the maintenance interface 23 are disassembled, and the maintenance interface 23 is closed.

[0050] Since the pipe feeding mechanism 5 is required to push the suction hose 3 into the equipment 19 to be repaired and to pull the suction hose 3 out of the equipment 19 to be repaired, the gap between the driving wheel 501 and the driven wheel 502 needs to be smaller than the diameter of the suction hose 3, so that the driving wheel 501 can drive the suction hose 3. As a result, the cross-sectional area of the suction hose 3 between the driving wheel 501 and the driven wheel 502 is smaller than the cross-sectional area at other positions. If the spherical element 20 or large-size debris is allowed to run out from inside the suction hose 3, it is easy for the spherical element 20 or large-size debris to get stuck between the driving wheel 501 and the driven wheel 502. By adopting the method of adsorbing the spherical element 20 and large-size debris by the suction hose 3 and guiding them to the first discharge port 407 for discharge by the commutation assembly, the problem that the spherical element 20 gets stuck between the driving wheel 501 and the driven wheel 502 and causes a failure of the suction device of the high-temperature gas-cooled reactor can be avoided.

[0051] With such a setting, when performing a dredging operation on the equipment 19 to be repaired, the maintenance personnel only need to connect the first outlet pipe orifice 409 of the first housing 401 to the repair interface 23 of the equipment 19 to be repaired, and then remotely control the suction device 1, the first driving mechanism 402 and the second driving mechanism 503 to perform corresponding actions, and the suction dredging operation can be completed. There is no need to disassemble the equipment or the pipeline, reducing the disassembly and assembly steps, making the operation of the dredging operation more convenient. At the same time, the on-site operation time of the maintenance personnel is less, which can effectively reduce the on-site working time of the maintenance personnel and avoid the maintenance personnel from being over-irradiated.

[0052] Refer to Figure 5 、 Figure 6 As shown in the figures, in some embodiments provided by the present invention, the pipe feeding mechanism 5 further includes a third housing 504 and a conduit 505. The third housing 504 is connected to the first housing 401 of the commutation mechanism 4. The driving wheel 501 and the driven wheel 502 are rotatably installed inside the third housing 504. The conduit 505 is arranged at the first end of the third housing 504, and one end of the conduit 505 is arranged outside the third housing 504 for the suction hose 3 to extend into, and the other end of the conduit 505 is arranged inside the third housing 504 and the pipe orifice faces the gap between the driving wheel 501 and the driven wheel 502 for guiding the suction hose 3 to the gap between the driving wheel 501 and the driven wheel 502.

[0053] Furthermore, a third flange 506 for connecting to the commutation mechanism 4 is provided at the second end of the third housing 504. By providing the third flange 506, it is convenient for the pipe feeding mechanism 5 to be connected to the commutation mechanism 4.

[0054] Optionally, the second driving mechanism 503 is a motor. Specifically, the second driving mechanism 503 is installed outside the third housing 504, and the output shaft of the second driving mechanism 503 is connected to the driving wheel 501.

[0055] In some embodiments provided by the present invention, the outer circumferential wall of the driving wheel 501 is provided with teeth. By providing teeth on the outer circumferential wall of the driving wheel 501, the frictional force between the driving wheel 501 and the suction hose 3 can be increased, the problem of slippage between the driving wheel 501 and the suction hose 3 can be avoided, and the driving effect of the driving wheel 501 on the suction hose 3 can be improved.

[0056] In order to further improve the driving effect between the suction hose 3 and the driving wheel 501, the suction hose 3 can be set as a threaded hose. In this way, the suction hose 3 can be driven to operate through the engagement between the teeth of the driving wheel 501 and the surface annular grooves of the suction hose 3, the requirement for the frictional force between the suction hose 3 and the driving wheel 501 can be reduced, so that there is no need to adopt the method of excessively reducing the distance between the driving wheel 501 and the driven wheel 502, the driving wheel 501 can maintain a good driving effect on the suction hose 3, and further the problem that the suction hose 3 is flattened and deformed can be avoided, the good fluidity inside the suction hose 3 is ensured, and the blockage of debris between the driving wheel 501 and the driven wheel 502 can be avoided.

[0057] In some embodiments provided by the present invention, the outer circumferential wall of the driven wheel 502 is provided with an annular groove for the suction hose 3 to be placed in. When the suction hose 3 runs between the driving wheel 501 and the driven wheel 502 and passes through the annular groove of the driven wheel 502, the annular groove can straighten and support the suction hose 3.

[0058] In some embodiments provided by the present invention, the tube feeding mechanism 5 further includes a movable seat 507, bolts 510, adjusting nuts 509 and elastic members 508. Among them, the bolts 510 are connected to the third housing 504, and the number of bolts 510 is at least two. The movable seat 507 is slidably arranged on at least two bolts 510, and the driven wheel 502 is rotatably installed on the movable seat 507. The two ends of the elastic member 508 are respectively abutted against the third housing 504 and the movable seat 507, and are used to drive the movable seat 507 to move towards the direction close to the driving wheel 501, so that the driven wheel 502 and the driving wheel 501 can clamp the suction hose 3 under the action of the elastic member 508, so that a certain mutual acting force is maintained between the suction hose 3 and the driving wheel 501. The adjusting nut 509 is threadedly connected to the bolt 510, and the adjusting nut 509 abuts against the side of the movable seat 507 close to the driving wheel 501, and is used to adjust the distance between the movable seat 507 and the driving wheel 501 and can prevent the movable seat 507 from falling off the bolt 510. Optionally, the elastic member 508 is a spring.

[0059] Refer to Figure 3 、 Figure 4 As shown, in some embodiments provided by the present invention, the connection channel includes a ball suction tube 405 and a ball outlet tube 406. Refer to Figure 3As shown, when the commutation assembly is in the first position, both ends of the ball extraction tube 405 are respectively connected to the first inlet pipe 408 and the first outlet pipe 409. The suction hose 3 can enter the maintenance interface 23 through the first inlet pipe 408, the ball extraction tube 405 and the first outlet pipe 409. Refer to Figure 4 As shown, when the commutation assembly is in the second position, both ends of the ball outlet tube 406 are respectively connected to the first inlet pipe 408 and the first discharge port 407. After the suction hose 3 stops suction, the spherical element 20 or large-size debris at the nozzle of the suction hose 3 can be discharged through the first inlet pipe 408, the ball outlet tube 406 and the first discharge port 407.

[0060] Optionally, the commutation assembly is rotatably connected to the first housing 401. That is, the commutation assembly switches between the first position and the second position by means of rotational movement. With such a setting, the structure of the commutation assembly is more compact. Optionally, the commutation assembly includes a driven gear 404 rotatably connected to the first housing 401, and both the ball extraction tube 405 and the ball outlet tube 406 are arranged on the driven gear 404. The first driving mechanism 402 includes a motor and a driving gear 403. The motor is installed on the first housing 401, for example, it can be arranged inside the first housing 401. The driving gear 403 can be sleeved on the output shaft of the motor, and the driving gear 403 meshes with the driven gear 404. By driving the driven gear 404 to rotate through the first driving mechanism 402, the commutation assembly can be driven to rotate to complete the position switching. Further, since the driven gear 404 does not need to rotate a full circle, in order to save processing costs and reduce the weight of the commutation mechanism 4, the driven gear 404 can be set as a sector gear.

[0061] Optionally, the first housing 401 can be a cylindrical structure, the first inlet pipe 408 and the first outlet pipe 409 are respectively arranged at both ends of the first housing 401, and the first inlet pipe 408 and the first outlet pipe 409 are coaxially arranged. The first discharge port 407 is arranged on the side wall of the first housing 401. Correspondingly, the ball extraction tube 405 is a straight tube, and the ball outlet tube 406 is a bent tube.

[0062] Certainly, the commutation assembly can also be connected to the first housing 401 by sliding, that is, the commutation assembly switches between the first position and the second position by means of sliding movement. Correspondingly, the first driving mechanism 402 is a telescopic driving mechanism. For example, the telescopic driving mechanism includes but is not limited to air cylinders, oil cylinders and electric cylinders.

[0063] In some embodiments provided by the present invention, a first flange 411 is arranged at the first inlet pipe 408 of the first housing 401, and the first flange 411 can be connected to the third flange 506 of the pipe feeding mechanism 5 through threaded connectors.

[0064] In some embodiments provided by the present invention, a second flange 412 is provided at the first outlet pipe orifice 409 of the first housing 401, and a socket pipe 413 is connected to the second flange 412. During the suction and dredging process, the socket pipe 413 is used to insert into the pipeline of the maintenance interface 23, and the second flange 412 is connected to the interface flange at the maintenance interface 23.

[0065] In some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device further includes a storage container 7, and the first discharge port 407 is connected to the storage container 7 through a pipeline. The storage container 7 can receive the extracted spherical elements 20, debris and dust, which is convenient for centralized management of the spherical elements 20 and avoids causing pollution. Optionally, the first discharge port 407 is connected to the storage container 7 through a transparent steel wire hose.

[0066] During the normal operation of the reactor and the fuel handling system, the on-line refueling fuel handling system is a closed fully automatic operation system, and all spherical elements 20 need to be counted and managed, and there cannot be uncontrolled spherical elements 20. Therefore, a on-site broken ball tank is usually provided for the automatic storage of on-line broken balls during the normal operation of the fuel handling system. An on-line pipeline 16 is provided on the on-site broken ball tank for introducing the broken balls discharged during the normal operation of the fuel handling system. In some embodiments provided by the present invention, the on-site broken ball tank serves as the storage container 7. During suction and dredging, the fuel handling system is depressurized, and the spherical elements 20, debris and dust sucked on-site can enter the broken ball tank for storage through the off-line interface of the broken ball tank, so as to facilitate the centralized management of the spherical elements 20, broken balls, debris and dust.

[0067] In some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device further includes a gas source device 8, and the gas source device 8 is connected to the first discharge port 407. Due to possible problems such as a small height difference between the first discharge port 407 and the storage container 7, or the irregular shape of large-size debris, the spherical elements 20 and large-size debris may not be able to flow smoothly in the pipeline between the first discharge port 407 and the storage container 7. By providing a gas source device 8 communicated with the first discharge port 407, a purge air flow can be introduced into the first discharge port 407 through the gas source device 8. Under the pushing action of the purge air flow, the spherical elements 20 or large-size debris in the pipeline are pushed into the storage container 7, improving the material guiding efficiency between the first discharge port 407 and the storage container 7 and reducing the risk of blockage of the pipeline between the first discharge port 407 and the storage container 7 for the spherical elements 20 and large-size debris. Optionally, the gas source device 8 can be a high-pressure gas cylinder, for example, the high-pressure gas cylinder includes but is not limited to nitrogen cylinders and helium cylinders.

[0068] Specifically, as Figure 3 and Figure 4As shown, at the first discharge port 407 of the commutation mechanism 4, there is a downwardly inclined discharge pipe which is connected to the storage container 7 through a pipeline, and the second air inlet 410 is arranged on the side wall of the discharge pipe. By making the discharge pipe inclined downward, it is more convenient for the spherical elements 20 and large-sized debris to be discharged. The downward inclination described here means inclining towards Figure 3 the lower part in

[0069] As Figure 7 shown, in some embodiments provided by the present invention, the filtering device 2 includes a second housing 201 and a filtering member 202. The second housing 201 includes a suction port 203, a second discharge port 204 and a feed port 205. The suction port 203 is connected to the suction device 1. For example, the suction port 203 is connected to the air extraction port of the suction device 1 through a hose. The filtering member 202 is arranged at the suction port 203. The feed port 205 is connected to the suction hose 3, and the second discharge port 204 is connected to the storage container 7 for discharging materials to the storage container 7. For example, the second discharge port 204 is connected to the storage container 7 through a hose. Specifically, the hose can be a transparent steel wire hose.

[0070] During the suction process, dust and debris with a diameter smaller than the inner diameter of the suction hose 3 sequentially enter the second housing 201 along the suction hose 3 and the feed port 205, and are retained in the second housing 201 under the blocking of the filtering member 202. The dust and debris in the second housing 201 can be discharged to the storage container 7 through the second discharge port 204, so as to be uniformly collected and managed together with the spherical elements 20 and large-sized debris.

[0071] Optionally, the filtering member 202 is a filter net or a filter plate.

[0072] As Figure 7 shown, optionally, the second housing 201 includes a main body with an opening at the top and a top cover arranged on the top of the main body. The top cover seals the opening, and the suction port 203 is arranged on the top cover. The top cover is connected to the main body through a threaded connector. A support surface is arranged in the opening of the main body, and the filtering member 202 is arranged on the support surface and fixed by a snap spring arranged on the inner wall of the opening. With such an arrangement, it is convenient to disassemble and assemble the filtering member 202.

[0073] In some embodiments provided by the present invention, a first air inlet 206 is arranged on the second housing 201, and the first air inlet 206 is connected to the air source device 8. With such an arrangement, after the suction is completed, the air source device 8 can be used to provide a purging air flow into the second housing 201 from the first air inlet 206. Under the action of the purging air flow, the dust and debris in the second housing 201 enter the storage container 7 through the second discharge port 204.

[0074] Further, the first air inlet 206 and the second discharge port 204 are respectively arranged on two opposite side walls of the second housing 201. Such an arrangement facilitates a better purging effect of the purging air flow entering from the first air inlet 206 on the dust and debris in the second housing 201.

[0075] Further, along the height direction of the second housing 201, the height of the first air inlet 206 is higher than that of the second discharge port 204. A gas guide pipe inclined towards the top of the second housing 201 is provided at the first air inlet 206, and a pipe joint 208 is provided on the gas guide pipe. The pipe joint 208 is connected to the gas source device 8 through a pipeline. A guiding inclined surface 207 is provided on the inner wall of the bottom of the second housing 201. Along the side where the second discharge port 204 is located to the side where the first air inlet 206 is located, the guiding inclined surface 207 gradually inclines towards the top of the second housing 201. By guiding the purging air flow through the conduit 505 and the guiding inclined surface 207, the purging effect of the purging air flow on the dust and debris in the second housing 201 can be further improved, and dust and debris are prevented from accumulating in the second housing 201.

[0076] Further, the high-temperature gas-cooled reactor suction device further includes a second three-way joint 22. The first discharge port 407 of the commutation mechanism 4 and the second discharge port 204 of the filtering device 2 are both connected to the second three-way joint 22, and the first discharge port 407 and the second discharge port 204 are connected to the storage container 7 through the second three-way joint 22. For example, transparent steel wire hoses are used to connect between the first discharge port 407 and the second three-way joint 22, between the second discharge port 204 and the second three-way joint 22, and between the second three-way joint 22 and the storage container 7. By providing the transparent steel wire hoses, the situation inside the pipeline can be conveniently observed.

[0077] In some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device further includes a detection device 9. The detection device 9 is arranged at the first inlet pipe 408 for detecting the position of the material. By providing the detection device 9, when the suction hose 3 with the adsorbed spherical elements 20 or large-sized debris passes through the first inlet pipe 408, the position of the spherical elements 20 or large-sized debris can be detected by the detection device 9, so as to control the pipe feeding mechanism 5 to stop conveying. For example, the detection device 9 includes, but is not limited to, an ultrasonic detector.

[0078] In some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device further includes a coiled pipe mechanism 6. The coiled pipe mechanism 6 includes a reel for winding and unwinding the suction hose 3. The filtering device 2 is communicated with the suction hose 3 through the reel. During the suction and dredging process, when the pipe feeding mechanism 5 conveys the suction hose 3 into the equipment 19 to be repaired, the reel can unwind the suction hose 3, and when the pipe feeding mechanism 5 withdraws the suction hose 3 from the equipment 19 to be repaired, the reel can wind up the suction hose 3. By providing the reel, a sufficient length of the suction hose 3 can be accommodated to meet the use requirements.

[0079] Reference Figure 8 As shown, optionally, in some embodiments provided by the present invention, the reel includes a frame 601, a central tube 602, a limit disk 603, a sleeve 604, a support rod 605, a swivel joint, and a third drive mechanism 608. Among them, the central tube 602 is rotatably connected to the frame 601. The central tube 602 is arranged as a hollow tube, and a through hole 607 is provided on the side wall of the central tube 602. The number of limit disks 603 is two. Both limit disks 603 are arranged on the central tube 602, and there is a gap between the two limit disks 603. The number of support rods 605 is multiple. The multiple support rods 605 are circumferentially distributed along the central tube 602. Both ends of each support rod 605 are respectively connected to the two limit disks 603. The fixed part of the swivel joint is connected to the frame 601, and the sleeve 604 is connected to the fixed part of the swivel joint. The suction hose 3 is wound around the support rod 605 outside the central tube 602. One end of the suction hose 3 extends into the central tube 602 through the through hole 607 and is connected to the rotating part of the swivel joint, that is, the sleeve 604 is connected to the suction hose 3 through the swivel joint. The other end of the suction hose 3 is used to extend into the equipment 19 to be repaired. The feed port 205 of the filtering device 2 is connected to the sleeve 604 through a hose. The third drive mechanism 608 is installed on the frame 601 and connected to the central tube 602 for driving the central tube 602 to rotate. For example, the third drive mechanism 608 is a reduction motor. It should be noted that the swivel joint is a conventional product in the prior art, and its structure and principle will not be elaborated here.

[0080] Furthermore, the reel further includes a handle 606. The handle 606 is connected to the frame 601 to facilitate the operator to lift and transfer the reel. Furthermore, the number of handles 606 is two, which are respectively arranged on both sides of the frame 601.

[0081] As Figure 9 shown, in some embodiments provided by the present invention, the coil mechanism 6 further includes a fourth housing. The reel is arranged in the fourth housing, and the fourth housing is provided with a second outlet 613 for the suction hose 3 to extend out. Such an arrangement can protect the reel.

[0082] Optionally, the fourth housing includes a box body 609 and a cover plate 610. The top of the box body 609 is provided with an opening for taking and placing the reel. The cover plate 610 is rotatably connected to the box body 609 for opening and closing the opening of the box body 609. Such an arrangement facilitates the operator to open the cover plate 610 to repair and clean the reel in the box body 609. Optionally, the cover plate 610 is connected to the box body 609 through a buckle 614, so as to lock and unlock the cover plate 610 by using the buckle 614.

[0083] Optionally, both the box body 609 and the cover plate 610 are made of titanium alloy plates.

[0084] Optionally, an observation window 612 is provided on the fourth housing, so that the operator can observe the situation of the reel from the outside. For example, the observation window 612 is provided on the cover plate 610.

[0085] Optionally, a handle 611 is provided on the box body 609, so that the operator can lift and transfer the coil pipe mechanism 6.

[0086] In some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device further includes an electric control box 15. The first driving mechanism 402, the second driving mechanism 503, the third driving mechanism 608 and the suction device 1 are all connected to the electric control box 15 to use the electric control box 15 to complete the power supply and control of the first driving mechanism 402, the second driving mechanism 503, the third driving mechanism 608 and the suction device 1. Further, the high-temperature gas-cooled reactor suction device further includes a cable reel 18, and the electric control box 15 can be powered through the cable reel 18, and the cable reel 18 can be used for winding and unwinding the cable. Optionally, the electric control box 15 is a pull rod electric control box, so as to facilitate the transfer and handling of the electric control box 15.

[0087] Of course, the features in the above various embodiments can be combined. For example, in some embodiments provided by the present invention, the high-temperature gas-cooled reactor suction device includes a suction device 1, a coil pipe mechanism 6, a pipe feeding mechanism 5, a commutation mechanism 4, a filtering device 2, a gas source device 8, a broken ball tank and an electric control box 15. The connection relationships between the various components are as described above and will not be repeated. Each of the above components is small and light, which is convenient for on-site maintenance, disassembly, installation and movement, and can meet the requirements of rapid operation.

[0088] Further, during the use process, the various components of the high-temperature gas-cooled reactor suction device can be placed according to the partition. For example, during the suction and dredging operation, the operation site can be divided into four working areas, namely the on-site equipment area 10, the on-site interface area 11, the maintenance equipment area 12 and the remote control area 13.

[0089] Among them, the on-site equipment area 10 is the area where the equipment to be repaired 19, the first three-way valve 21, and the broken ball tank are located. During the operation, maintenance personnel do not need to approach this area. The on-site interface area 11 is the area where the maintenance interface 23, the reversing mechanism 4, the filtering device 2, and the pipe feeding mechanism 5 are located. This area is the area where the spherical element 20 and debris pass through during the interface disassembly and assembly operation and the suction process. The maintenance equipment area 12 is the area where the suction device 1 and the coil mechanism 6 are located. This area is used for the preparatory work and the follow-up work of the dredging and repair operation. The maintenance equipment area 12 is at a preset distance from the on-site interface area 11 and the on-site equipment area 10. The remote control area 13 is the area where the gas source device 8 and the electric control box 15 are located. This area is far from the maintenance site and is an area where safe operations can be carried out. By dividing the work areas, maintenance personnel can carry out operations in each work area according to requirements, avoiding excessive irradiation of maintenance personnel.

[0090] Furthermore, the high-temperature gas-cooled reactor suction device further includes a camera device 14 and a display screen 17 connected to the camera device 14. Optionally, camera devices 14 are provided in both the on-site interface area 11 and the maintenance equipment area 12. With this setting, it is possible to monitor the operation of the equipment in the on-site interface area 11 and the maintenance equipment area 12, remotely control the equipment, and at the same time, the operation process of maintenance personnel in the on-site interface area 11 and the maintenance equipment area 12 can be monitored through the camera device 14.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature gas-cooled reactor suction device, characterized in that: include: A suction device (1), a filter device (2) and a suction hose (3) connected in sequence, wherein the inner diameter of the suction hose (3) is smaller than the diameter of the spherical element; A reversing mechanism (4), comprising a first shell (401), a reversing assembly and a first driving mechanism (402); the first shell (401) is provided with a first discharge port (407), a first pipe inlet (408) for the suction hose (3) to extend thereinto, and a first pipe outlet (409) for connecting to a maintenance interface (23) of the equipment to be repaired; the reversing assembly is arranged in the first shell (401) and can be switched between a first position and a second position; the reversing assembly is provided with a connecting channel; when the reversing assembly is in a first position, the connecting channel connects the first pipe inlet (408) and the first pipe outlet (409); when the reversing assembly is in a second position, the connecting channel connects the first pipe inlet (408) and the first discharge port (407); the first driving mechanism (402) is connected to the reversing assembly and is used to drive the reversing assembly to move; a pipe delivery mechanism (5) arranged at the first pipe inlet (408), the pipe delivery mechanism (5) comprising a driving wheel (501), a driven wheel (502) and a second driving mechanism (503); the driving wheel (501) and the driven wheel (502) are rotatably arranged, and there is a gap between the two for the suction hose (3) to pass through; the second driving mechanism (503) is connected to the driving wheel (501) and is used to drive the driving wheel (501) to rotate; A storage container (7), wherein the first discharge port (407) is connected to the storage container (7) via a pipeline; The filtering device (2) comprises a second shell (201) and a filter element (202); the second shell (201) comprises a suction port (203), a second discharge port (204) and a feed port (205); the suction port (203) is connected to the suction device (1); the filter element (202) is arranged at the suction port (203); the feed port (205) is connected to the suction hose (3); the second discharge port (204) is connected to the storage container (7) for discharging material into the storage container (7).

2. The high temperature gas-cooled reactor suction device according to claim 1, characterized in that: It also includes an air source device (8), and the air source device (8) is connected to the first discharge port (407).

3. The high temperature gas-cooled reactor suction device according to claim 1, characterized in that: It also comprises an air source device (8), the second shell (201) is provided with a first air inlet (206), and the first air inlet (206) is connected to the air source device (8).

4. The high temperature gas-cooled reactor suction device according to any one of claims 1 to 3, characterized in that: The outer circumferential wall of the driving wheel (501) is provided with gear teeth, and the outer circumferential wall of the driven wheel (502) is provided with an annular groove for receiving the suction hose (3).

5. The high temperature gas-cooled reactor suction device according to any one of claims 1 to 3, characterized in that: It also comprises a detection device (9), which is arranged at the first pipe inlet (408) and is used to detect the position of the material.

6. The high temperature gas-cooled reactor suction device according to any one of claims 1 to 3, characterized in that: It also comprises a coil mechanism (6), the coil mechanism (6) comprising a reel for retracting and releasing the suction hose (3), and the filter device (2) is connected to the suction hose (3) via the reel.

7. The high temperature gas-cooled reactor suction device according to claim 6, characterized in that: The coil mechanism (6) further comprises a fourth shell, the reel is arranged in the fourth shell, and the fourth shell is provided with a second outlet for the suction hose (3) to extend out.

8. The high temperature gas-cooled reactor suction device according to any one of claims 1 to 3, characterized in that: The connecting channel comprises a ball extraction tube (405) and a ball outlet tube (406); when the reversing assembly is in a first position, the two ends of the ball extraction tube (405) are respectively connected to the first pipe inlet (408) and the first pipe outlet (409); when the reversing assembly is in a second position, the two ends of the ball outlet tube (406) are respectively connected to the first pipe inlet (408) and the first outlet (407).

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