Nuclear power plant finger cot roller plunger

Abstract

The utility model discloses a nuclear power plant finger sleeve pipe roller formula pull -in and pull -out device, including actuating mechanism, drive mechanism and embrace tightly mechanism, actuating mechanism includes first casing, second casing, first transmission subassembly and second transmission subassembly, first casing is equipped with first transmission subassembly, and first transmission subassembly includes main gear shaft, first gear shaft and second gear shaft, and first gear shaft is equipped with first gyro wheel, second gear shaft is equipped with second gyro wheel, second casing is equipped with second transmission subassembly, and second transmission subassembly includes first roller axle and second roller axle, and first roller axle is equipped with third gyro wheel, and second roller axle is equipped with fourth gyro wheel, and the transmission channel of nuclear power plant finger sleeve pipe is formed between first gyro wheel, second gyro wheel, third gyro wheel and fourth gyro wheel, and drive mechanism is equipped with drive motor, and embrace tightly mechanism is used for embracing tightly the sealing component of nuclear power plant finger sleeve pipe. The device can stably carry out the plug -in operation of nuclear power plant finger sleeve pipe, can reduce the operating personnel, reduce operating cost, effectively shorten the operation time.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a roller-type insertion and removal device for finger sleeves in nuclear power plants. Background Technology

[0002] During the maintenance of nuclear power equipment, it is necessary to perform extraction and insertion operations on RIC finger sleeves in the R141 / R181 building (hereinafter referred to as the RIC building). As shown in Figure 1, the R141 building layout has a large number of equipment and complex pipelines, with limited usable space, making it difficult to place large equipment. Although there are many workers, the limited space and inconvenient movement of personnel result in a significant amount of time spent on finger sleeve extraction and insertion. In the past, when manually performing finger sleeve extraction and insertion operations in nuclear power plants, the intensity of the work and the resulting fatigue made it difficult to ensure the consistency and stability of the operation for each finger sleeve. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a roller-type insertion and removal device for finger sleeves in nuclear power plants, so as to solve the technical problem that the insertion and removal time of finger sleeves is long due to manual operation in related technologies.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant finger sleeve roller type insertion and withdrawal device, including an actuator, a drive mechanism and a clamping mechanism; The actuator includes a first housing, a second housing, a first conveying component, and a second conveying component. The first housing and the second housing are disposed opposite to each other and are connected by a connecting component. The first housing has a first receiving groove, and the second housing has a second receiving groove. The first receiving groove and the second receiving groove are disposed opposite to each other. The first housing is provided with a first conveying assembly, which includes a main gear shaft, a first gear shaft, and a second gear shaft. The main gear shaft is provided with a main gear, the first gear shaft is provided with a first gear, and a first roller is provided at one end of the first gear shaft. The second gear shaft is provided with a second gear, and a second roller is provided at one end of the second gear shaft. The first gear and the second gear are both meshed with the main gear, and the first roller and the second roller are both located in the first receiving groove. The second housing is provided with a second conveying assembly, which includes a first roller and a second roller. One end of the first roller is provided with a third roller, and one end of the second roller is provided with a fourth roller. The third roller and the fourth roller are both located in the second receiving groove. The first roller, the second roller, the third roller and the fourth roller form a conveying channel for the nuclear power plant finger sleeve. The drive mechanism is connected to the first housing, and the drive mechanism is provided with a drive motor connected to the main gear shaft; The clamping mechanism is connected to one end of the first housing along its length, and the clamping mechanism is used to clamp the sealing assembly of the nuclear power plant finger sleeve.

[0005] In some embodiments, the first roller is provided with a first protective sleeve, the first protective sleeve forming a first annular groove; the second roller is provided with a second protective sleeve, the second protective sleeve forming a second annular groove; the third roller is provided with a third protective sleeve, the third protective sleeve forming a third annular groove; and the fourth roller is provided with a fourth protective sleeve, the fourth protective sleeve forming a fourth annular groove. The first annular groove, the second annular groove, the third annular groove, and the fourth annular groove are arranged opposite to each other to form the conveying channel.

[0006] In some embodiments, the first transmission component further includes a third gear shaft, a fourth gear shaft, a first transmission gear shaft, and a second transmission gear shaft; the third gear shaft is disposed adjacent to the first gear shaft, and the fourth gear shaft is disposed adjacent to the second gear shaft; The third gear shaft is provided with a third gear, and one end of the third gear shaft is provided with a fifth roller; the fourth gear shaft is provided with a fourth gear, and one end of the fourth gear shaft is provided with a sixth roller; the first transmission gear shaft is provided with a fifth gear, and the second transmission gear shaft is provided with a sixth gear; The third gear meshes with the fifth gear, and the fifth gear meshes with the main gear; the fourth gear meshes with the sixth gear, and the sixth gear meshes with the main gear. The fifth roller and the sixth roller are both located in the first receiving groove. The first roller, the second roller, the fifth roller and the sixth roller are arranged on the same horizontal plane. The fifth roller is provided with a fifth protective sleeve, which forms a fifth annular groove. The sixth roller is provided with a sixth protective sleeve, which forms a sixth annular groove.

[0007] In some embodiments, the second conveying assembly further includes a third roller and a fourth roller, the third roller being disposed adjacent to the first roller and the fourth roller being disposed adjacent to the second roller; a seventh roller is provided at one end of the third roller and an eighth roller is provided at one end of the fourth roller, and both the seventh roller and the eighth roller are located within the second receiving groove; the third roller, the fourth roller, the seventh roller, and the eighth roller are disposed on the same horizontal plane; a seventh protective sleeve is provided on the seventh roller, and the seventh protective sleeve forms a seventh annular groove; an eighth protective sleeve is provided on the eighth roller, and the eighth protective sleeve forms an eighth annular groove.

[0008] In some embodiments, the second housing is provided with a first through hole and a second through hole; The connecting assembly includes two guide rods, which are arranged in parallel and spaced apart. The second housing has a first through hole, and the guide rods pass through the first through hole with their lower ends fixedly connected to the first housing. The portion of the guide rod located between the first housing and the second housing is provided with an elastic element. The connecting assembly further includes a first connector and a first threaded component. The first connector passes through the second through hole, and the lower end of the first connector is fixedly connected to the first housing. The upper end of the first connector is located inside the second through hole, and the upper end of the first connector is provided with a first threaded groove. The first threaded component includes a connected screw portion and an operating portion. The screw portion is screwed into the first threaded groove, and the operating portion protrudes from the second through hole. The operating portion is used to connect with the operating component. The force applied to the operating part causes the first housing and the second housing to move closer to or further away from each other.

[0009] In some embodiments, the clamping mechanism includes a connecting rod and a clamping assembly, wherein the connecting rod includes a rod body, and a first connecting block and a second connecting block are respectively provided at both ends of the rod body; The first connecting block is connected to the side of the first housing along its length, and the second connecting block is connected to the clamping assembly.

[0010] In some embodiments, the clamping assembly includes a base, a first clamping member, a second clamping member, a threaded member, and a locking member; The base is connected to the second connecting block, and the base has a first groove and a second groove that are spaced apart vertically. The first end of the first clamping member is rotatably mounted in the first groove via the first connecting shaft, and the second end of the first clamping member is provided with a first through groove. The first end of the second clamping member is rotatably mounted in the second groove via the second connecting shaft, and the second end of the second clamping member is provided with a second through groove; The lower end of the threaded component is provided with a mounting block, which is rotatably mounted in the second through groove via a third connecting shaft, and the locking component is connected to the threaded component. The clamping assembly has a clamping mode and an unlocking mode. When the clamping assembly is in the clamping mode, the first clamping member and the second clamping member abut against each other, the threaded member is located in the first through groove, the locking member is located above the first through groove and the lower end face of the locking member abuts against the upper surface of the second end of the first clamping member, and the clamping assembly clamps the nuclear power plant finger sleeve. When the clamping assembly is in the unlocking mode, the locking member releases the first clamping member, the threaded member rotates out of the first through groove, the second clamping member can rotate relative to the first clamping member, and the clamping assembly releases the nuclear power plant finger sleeve.

[0011] In some embodiments, a detection component is provided on the side of the first housing opposite to the clamping mechanism; The detection component includes a mounting base and a limit sensor mounted on the mounting base.

[0012] In some embodiments, the drive motor is mounted inside the first housing; The first housing is also provided with heat dissipation holes on both sides of the drive motor; The drive mechanism includes a cooling fan, which is disposed inside the first housing and is positioned opposite to the heat dissipation holes.

[0013] In some embodiments, the first housing is further provided with a display.

[0014] The implementation of this utility model has the following beneficial effects: Compared with manual operation, the roller-type insertion and removal device for nuclear power plant finger sleeves can stably carry out the insertion and removal of nuclear power plant finger sleeves, which can reduce the number of operators, reduce operating costs, and effectively shorten the operation time. It can also effectively reduce the testing time of related systems in the RIC plant during major overhauls and reduce the power production interruption time caused by equipment shutdown for maintenance, thereby effectively increasing the power generation time and power output of the power plant and having a positive effect on the power plant's productivity. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the RIC plant; Figure 2 This is one of the structural schematic diagrams of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 3 This is the second schematic diagram of the structure of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 4 This is the third of the structural schematic diagrams of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 5 This is the fourth schematic diagram of the structure of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 6 This is the fifth of several schematic diagrams of the nuclear power plant finger sleeve roller insertion and removal device in some embodiments of this utility model; Figure 7 This is the sixth of the structural schematic diagrams of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 8 This is a partial structural schematic diagram of the nuclear power plant finger sleeve roller-type insertion and removal device in some embodiments of this utility model; Figure 9 This is one of the partial cross-sectional views of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 10 This is a partial cross-sectional view of the nuclear power plant finger sleeve roller type insertion and removal device in some embodiments of this utility model; Figure 11 This is one of the structural schematic diagrams of the first and second transmission components in some embodiments of this utility model; Figure 12 This is a second schematic diagram of the structure of the first and second transmission components in some embodiments of this utility model; Figure 13 This is the third of the structural schematic diagrams of the first and second transmission components in some embodiments of this utility model; Figure 14 This is an exploded view of the clamping component in some embodiments of the present invention. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0017] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0018] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0019] See Figures 2 to 14 As shown, this utility model discloses a roller-type insertion and removal device for nuclear power plant finger sleeves. It can be used to perform the extraction and insertion operations of the middle section of nuclear power plant finger sleeves. The device employs a combination of gear and roller transmission, using rollers to transport the nuclear power plant finger sleeves (steel pipes) efficiently and stably to achieve the insertion and removal operations. The gears provide precise power transmission, while the rollers ensure smooth movement of the nuclear power plant finger sleeves during the pulling process. Nuclear power plant finger sleeves include, but are not limited to, RIC finger sleeves.

[0020] See Figures 2 to 14 As shown, the nuclear power plant finger sleeve roller type insertion and removal device includes an actuator 10, a drive mechanism 20, and a clamping mechanism 30.

[0021] The actuator 10 includes a first housing 11, a second housing 12, a first transmission component 13 and a second transmission component 14. The first housing 11 and the second housing 12 are disposed opposite to each other and are connected by a connecting component 15. The first housing 11 and the second housing 12 may be made of 7075 aerospace aluminum.

[0022] The first housing 11 has a first receiving groove 111, and the second housing 12 has a second receiving groove 121. The first receiving groove 111 and the second receiving groove 121 are arranged opposite to each other.

[0023] The first housing 11 is provided with a first conveying assembly 13, which includes a main gear shaft 131, a first gear shaft 132 and a second gear shaft 133. The main gear shaft 131 is provided with a main gear 1311, the first gear shaft 132 is provided with a first gear 1321, and a first roller 1322 is provided at one end of the first gear shaft 132. The second gear shaft 133 is provided with a second gear 1331, and a second roller 1332 is provided at one end of the second gear shaft 133. The first gear 1321 and the second gear 1331 are both meshed with the main gear 1311, and the first roller 1322 and the second roller 1332 are both located in the first receiving groove 111.

[0024] The second housing 12 is provided with a second conveying assembly 14, which includes a first roller 141 and a second roller 142. One end of the first roller 141 is provided with a third roller 1411, and one end of the second roller 142 is provided with a fourth roller 1421. The third roller 1411 and the fourth roller 1421 are both located in the second receiving groove 121. The first roller 1322 and the second roller 1332 are arranged side by side, and the third roller 1411 and the fourth roller 1421 are arranged side by side. The first roller 1322, the second roller 1332, the third roller 1411 and the fourth roller 1421 form a conveying channel for the nuclear power plant finger sleeve.

[0025] The drive mechanism 20 is connected to the first housing 11, and the drive mechanism 20 is equipped with a drive motor 21 connected to the main gear shaft 131. The clamping mechanism 30 is connected to one end of the first housing 11 in the longitudinal direction, and the clamping mechanism 30 is used to clamp the sealing assembly of the nuclear power plant finger sleeve.

[0026] Compared to manual operation, the roller-type insertion and removal device for nuclear power plant finger sleeves can reliably perform insertion and removal operations, reducing the number of operators, lowering operating costs, and effectively shortening operation time. It can also effectively reduce the testing time of related systems in the RIC plant during major overhauls and reduce the power production interruption time caused by equipment shutdown for maintenance, thereby effectively increasing the power generation time and power output of the power plant and having a positive effect on the power plant's productivity.

[0027] In some embodiments, the first roller 1322 is provided with a first protective sleeve 1323, which forms a first annular groove; the second roller 1332 is provided with a second protective sleeve 1333, which forms a second annular groove; the third roller 1411 is provided with a third protective sleeve 1412, which forms a third annular groove; and the fourth roller 1421 is provided with a fourth protective sleeve 1422, which forms a fourth annular groove. The first, second, third, and fourth annular grooves are arranged opposite to each other to form the conveying channel. The first protective sleeve 1323, the second protective sleeve 1333, the third protective sleeve 1412, and the fourth protective sleeve 1422 can be silicone protective sleeves or rubber protective sleeves to protect the nuclear power plant finger sleeve.

[0028] In some embodiments, the first transmission assembly 13 further includes a third gear shaft 134, a fourth gear shaft 135, a first transmission gear shaft 136, and a second transmission gear shaft 137; the third gear shaft 134 is disposed adjacent to the first gear shaft 132, and the fourth gear shaft 135 is disposed adjacent to the second gear shaft 133. The third gear shaft 134 is provided with a third gear 1341, and one end of the third gear shaft 134 is provided with a fifth roller 1342; the fourth gear shaft 135 is provided with a fourth gear 1351, and one end of the fourth gear shaft 135 is provided with a sixth roller 1352; the first transmission gear shaft 136 is provided with a fifth gear 1361, and the second transmission gear shaft 137 is provided with a sixth gear 1371. The third gear 1341 meshes with the fifth gear 1361, and the fifth gear 1361 meshes with the main gear 1311; the fourth gear 1351 meshes with the sixth gear 1371, and the sixth gear 1371 meshes with the main gear 1311. The fifth roller 1342 and the sixth roller 1352 are both located within the first receiving groove 111. The first roller 1322, the second roller 1332, the fifth roller 1342, and the sixth roller 1352 are arranged on the same horizontal plane. The fifth roller 1342 is provided with a fifth protective sleeve 1343, which forms a fifth annular groove; the sixth roller 1352 is provided with a sixth protective sleeve 1353, which forms a sixth annular groove. The fifth protective sleeve 1343 and the sixth protective sleeve 1353 can be silicone or rubber protective sleeves, which can protect the nuclear power plant's finger sleeve.

[0029] In some embodiments, the second conveying assembly 14 further includes a third roller 143 and a fourth roller 144. The third roller 143 is disposed adjacent to the first roller 141, and the fourth roller 144 is disposed adjacent to the second roller 142. A seventh roller 1431 is provided at one end of the third roller 143, and an eighth roller 1441 is provided at one end of the fourth roller 144. Both the seventh roller 1431 and the eighth roller 1441 are located within the second receiving groove 121. The third roller 1411, the fourth roller 1421, the seventh roller 1431, and the eighth roller 1441 are disposed on the same horizontal plane. A seventh protective sleeve 1432 is provided on the seventh roller 1431, and the seventh protective sleeve 1432 forms a seventh annular groove. An eighth protective sleeve 1442 is provided on the eighth roller 1441, and the eighth protective sleeve 1442 forms an eighth annular groove. The seventh protective sleeve 1432 and the eighth protective sleeve 1442 can be silicone protective sleeves or rubber protective sleeves, which can protect the nuclear power plant finger tubes.

[0030] In some embodiments, the main gear shaft 131, the first gear shaft 132, the second gear shaft 133, the third gear shaft 134, the fourth gear shaft 135, the first transmission gear shaft 136, the second transmission gear shaft 137, the first roller 141, the second roller 142, the third roller 143, and the fourth roller 144 may be made of AISI304 or other carbon alloy materials.

[0031] In some embodiments, the second housing 12 is provided with a first through hole and a second through hole. The connecting assembly 15 includes two guide rods 151, which are arranged in parallel and spaced apart. The second housing 12 is provided with two first through holes. The guide rods 151 pass through the first through holes, and the lower ends of the guide rods 151 are fixedly connected to the first housing 11. The portion of the guide rods 151 located between the first housing 11 and the second housing 12 is provided with an elastic element 152. The elastic element 152 may be, but is not limited to, a helical columnar spring.

[0032] In some embodiments, the connecting assembly 15 further includes a first connector 153 and a first threaded connector 154. The first connector 153 passes through the second through hole, and the lower end of the first connector 153 is fixedly connected to the first housing 11. The upper end of the first connector 153 is located in the second through hole, and the upper end of the first connector 153 is provided with a first threaded groove 1531.

[0033] The first threaded connector 154 includes a connected screw portion 1541 and an operating portion 1542. The screw portion 1541 is screwed into the first threaded groove 1531, and the operating portion 1542 protrudes from the second through hole. The operating portion 1542 is used to connect with an operating component. The operating component may be, but is not limited to, a torque wrench.

[0034] The operating part 1542 is subjected to force that causes the first housing 11 and the second housing 12 to move closer or further apart. When the operating part 1542 is subjected to force that causes the first housing 11 and the second housing 12 to move closer together, the first conveying assembly 13 and the second conveying assembly 14 can contact the nuclear power plant finger sleeve and can slightly compress the nuclear power plant finger sleeve to facilitate its conveyance. When the operating part 1542 is subjected to force that causes the first housing 11 and the second housing 12 to move further apart, the first conveying assembly 13 and the second conveying assembly 14 separate relative to each other, allowing the actuator 10 to detach from the nuclear power plant finger sleeve.

[0035] In some embodiments, the first housing 11 may also be provided with a handle 16, which may be a rotatable handle for easy lifting.

[0036] In some embodiments, the lower part of the first housing 11 may also be provided with an installation cylinder 17, which can be used to connect and fix components such as support frames to provide auxiliary support for the nuclear power plant finger sleeve roller type insertion and removal device.

[0037] In some embodiments, the clamping mechanism 30 includes a connecting rod 31 and a clamping assembly 32. The connecting rod 31 includes a rod body 311, with a first connecting block 312 and a second connecting block 313 at each end. The rod body 311, the first connecting block 312, and the second connecting block 313 may be arranged perpendicularly to each other. The first connecting block 312 is connected to the side of the first housing 11 along its length, and the second connecting block 313 is connected to the clamping assembly 32.

[0038] like Figure 14 As shown, in some embodiments, the clamping assembly 32 includes a base 321, a first clamping member 322, a second clamping member 323, a threaded member 324, and a locking member 325. The base 321 is connected to the second connecting block 313, and the base 321 may be connected to the second connecting block 313 via a fixing member 329, which includes, but is not limited to, fastening bolts or fastening screws.

[0039] The base 321 has a first groove 3211 and a second groove 3212 spaced apart vertically; the first end of the first clamping member 322 is rotatably mounted in the first groove 3211 via a first connecting shaft 326, and the second end of the first clamping member 322 is provided with a first through groove; the first end of the second clamping member 323 is rotatably mounted in the second groove 3212 via a second connecting shaft 327, and the second end of the second clamping member 323 is provided with a second through groove; the lower end of the threaded member 324 is provided with a mounting block 3241, and the mounting block 3241 is rotatably mounted in the second through groove via a third connecting shaft 328; the locking member 325 is connected to the threaded member 324.

[0040] The clamping assembly 32 has a clamping mode and an unlocking mode. In the clamping mode, the first clamping member 322 and the second clamping member 323 abut against each other, the threaded member 324 is located in the first through groove, and the locking member 325 is located above the first through groove with its lower end face abutting against the upper surface of the second end of the first clamping member 322. The clamping assembly 32 clamps the nuclear power plant finger sleeve. In the unlocking mode, the locking member 325 releases the first clamping member 322, the threaded member 324 rotates out of the first through groove, and the second clamping member 323 can rotate relative to the first clamping member 322. The clamping assembly 32 then releases the nuclear power plant finger sleeve. The clamping assembly 32 has a relatively simple structure and is easy to operate; one person can operate it.

[0041] In some embodiments, the clamping component 32 may be made of 7075 aerospace aluminum.

[0042] In some embodiments, the first housing 11 is provided with a detection component 40 on the side opposite to the clamping mechanism 30; the detection component 40 includes a mounting base 41 and a limit sensor 42 mounted on the mounting base 41, the limit sensor 42 including but not limited to a limit switch or a photoelectric sensor.

[0043] In some embodiments, the drive motor 21 is installed within the first housing 11. The drive motor 21 may include a frameless torque motor and a harmonic reducer connected to each other, with the harmonic reducer shafted to the main gear shaft 131. The frameless torque motor features small size, high power density, and high speed. The harmonic reducer features small size and high output torque. The reduction ratio of the harmonic reducer is 1:50. The rated torque of the frameless torque motor is 1.23 Nm, and the rated speed is 5600 rpm. The frameless torque motor can be a TBM2G-07613D motor, and the harmonic reducer can be an FHG-20 harmonic reducer. Of course, the drive motor can also be selected and configured according to actual needs; no specific limitations are made here.

[0044] In some embodiments, the transmission stroke of the actuator 10 can be 6m, but it can be set according to actual needs and is not specifically limited here.

[0045] The first housing 11 is provided with heat dissipation holes on both sides of the drive motor 21; the drive mechanism 20 includes a cooling fan 22, which is disposed inside the first housing 11 and is arranged opposite to the heat dissipation holes.

[0046] In some embodiments, the first housing 11 is further provided with a display 23, which may be a digital display screen with a size of 59×46mm, without touch screen function to prevent accidental touch.

[0047] In some embodiments, the upper part of the first housing 11 is further provided with control buttons, which may include, but are not limited to, a pull-out control button, an insertion control button, and a stop button.

[0048] In some embodiments, the drive motor 21, cooling fan 22, display 23, and control buttons can be connected to a control device, which can be a PLC industrial computer. The PLC industrial computer can be selected from the EASY series, featuring easy networking, easy expansion, and modularity. It offers high stability while being easy to use and adjust. The first housing 11 may be provided with wiring holes or connectors. The control device can utilize existing technology, and no specific limitations are made here.

[0049] As complex and critical energy production facilities, nuclear power plants rely heavily on the stable operation and efficient maintenance of their equipment to ensure a stable power supply. The finger sleeve insertion and removal operation within the RIC (Regenerative Nuclear Activated) building is a crucial component of nuclear power plant maintenance. Traditional manual operation methods have numerous limitations in terms of efficiency, labor costs, and safety. The roller-type finger sleeve insertion and removal device in this nuclear power plant makes significant contributions in these areas. In terms of efficiency: Manual insertion and removal of finger sleeves is time-consuming for a single sleeve, and consistency and stability are difficult to guarantee. Previously, inserting and removing a single set of finger sleeves could take a day or more. However, with the roller-type insertion and removal device in this nuclear power plant, the insertion and removal time can be reduced to within 4 hours. Reducing the testing time of relevant systems in the RIC plant during overhauls allows for faster restoration of normal operation of related equipment, minimizing power generation interruptions due to equipment downtime for maintenance. This effectively increases the power plant's generating time and output, positively impacting plant productivity.

[0050] Regarding labor costs: In the past, the insertion and removal of finger sleeves in the RIC (Radio Injection Chamber) building during nuclear power plant maintenance relied on manual labor, requiring at least four workers. This not only consumed a significant amount of human resources but could also lead to low efficiency due to coordination issues. However, with the implementation of the roller-type finger sleeve insertion and removal device, only two operators are needed to complete the same task. This means that the saved human resources can be redistributed to other critical maintenance aspects or production processes within the nuclear power plant, achieving optimized resource allocation. For example, these surplus personnel can be used for control system testing and fine-tuning of power generation equipment, thereby improving the overall maintenance level and operational efficiency of the power plant and directly contributing to increased plant productivity.

[0051] Safety aspects: Nuclear power plant work is unique. When inspecting finger sleeves in the RIC (Regenerative Nuclear Control) plant, maintenance personnel must wear protective clothing. While protective clothing provides protection, it limits operational flexibility and increases the risk of misoperation. However, the application of this nuclear power plant's finger sleeve roller-type insertion and removal device significantly reduces the possibility of misoperation due to its precise control and convenient process. This improvement enhances the safety level of power plant maintenance, reduces downtime, maintenance costs, and additional resource investment caused by safety accidents, and lays a solid foundation and provides strong support for improving power plant productivity.

[0052] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A roller-type insertion and removal device for finger sleeves in nuclear power plants, characterized in that, It includes an actuator (10), a drive mechanism (20), and a clamping mechanism (30); The actuator (10) includes a first housing (11), a second housing (12), a first transmission component (13), and a second transmission component (14). The first housing (11) and the second housing (12) are disposed opposite to each other and are connected by a connecting component (15). The first housing (11) has a first receiving groove (111), and the second housing (12) has a second receiving groove (121). The first receiving groove (111) and the second receiving groove (121) are disposed opposite to each other. The first housing (11) is provided with a first conveying assembly (13), which includes a main gear shaft (131), a first gear shaft (132), and a second gear shaft (133). The main gear shaft (131) is provided with a main gear (1311), the first gear shaft (132) is provided with a first gear (1321), and a first roller (1322) is provided at one end of the first gear shaft (132). The second gear shaft (133) is provided with a second gear (1331), and a second roller (1332) is provided at one end of the second gear shaft (133). The first gear (1321) and the second gear (1331) are both meshed with the main gear (1311), and the first roller (1322) and the second roller (1332) are both located in the first receiving groove (111). The second housing (12) is provided with a second conveying assembly (14), which includes a first roller (141) and a second roller (142). One end of the first roller (141) is provided with a third roller (1411), and one end of the second roller (142) is provided with a fourth roller (1421). The third roller (1411) and the fourth roller (1421) are both located in the second receiving groove (121). The first roller (1322), the second roller (1332), the third roller (1411) and the fourth roller (1421) form a conveying channel for the nuclear power plant finger sleeve. The drive mechanism (20) is connected to the first housing (11), and the drive mechanism (20) is provided with a drive motor (21) connected to the main gear shaft (131). The clamping mechanism (30) is connected to one end of the first housing (11) along its length, and the clamping mechanism (30) is used to clamp the sealing assembly of the nuclear power plant finger sleeve.

2. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The first roller (1322) is provided with a first protective sleeve (1323), which forms a first annular groove; the second roller (1332) is provided with a second protective sleeve (1333), which forms a second annular groove; the third roller (1411) is provided with a third protective sleeve (1412), which forms a third annular groove; and the fourth roller (1421) is provided with a fourth protective sleeve (1422), which forms a fourth annular groove. The first annular groove, the second annular groove, the third annular groove, and the fourth annular groove are arranged opposite to each other to form the conveying channel.

3. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 2, characterized in that, The first transmission assembly (13) further includes a third gear shaft (134), a fourth gear shaft (135), a first transmission gear shaft (136), and a second transmission gear shaft (137); the third gear shaft (134) is arranged adjacent to the first gear shaft (132), and the fourth gear shaft (135) is arranged adjacent to the second gear shaft (133); The third gear shaft (134) is provided with a third gear (1341), and a fifth roller (1342) is provided at one end of the third gear shaft (134); the fourth gear shaft (135) is provided with a fourth gear (1351), and a sixth roller (1352) is provided at one end of the fourth gear shaft (135); the first transmission gear shaft (136) is provided with a fifth gear (1361), and the second transmission gear shaft (137) is provided with a sixth gear (1371); The third gear (1341) meshes with the fifth gear (1361), and the fifth gear (1361) meshes with the main gear (1311); the fourth gear (1351) meshes with the sixth gear (1371), and the sixth gear (1371) meshes with the main gear (1311); The fifth roller (1342) and the sixth roller (1352) are both located in the first receiving groove (111). The first roller (1322), the second roller (1332), the fifth roller (1342) and the sixth roller (1352) are arranged on the same horizontal plane. The fifth roller (1342) is provided with a fifth protective sleeve, which forms a fifth annular groove. The sixth roller (1352) is provided with a sixth protective sleeve, which forms a sixth annular groove.

4. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 3, characterized in that, The second conveying assembly (14) further includes a third roller (143) and a fourth roller (144). The third roller (143) is arranged adjacent to the first roller (141), and the fourth roller (144) is arranged adjacent to the second roller (142). A seventh roller (1431) is provided at one end of the third roller (143), and an eighth roller (1441) is provided at one end of the fourth roller (144). The seventh roller (1431) and the eighth roller (1441) are both positioned... Within the second receiving groove (121); the third roller (1411), the fourth roller (1421), the seventh roller (1431), and the eighth roller (1441) are arranged on the same horizontal plane; the seventh roller (1431) is provided with a seventh protective sleeve (1432), which forms a seventh annular groove; the eighth roller (1441) is provided with an eighth protective sleeve (1442), which forms an eighth annular groove.

5. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The second housing (12) is provided with a first through hole and a second through hole; The connecting assembly (15) includes two guide rods (151) arranged in parallel and spaced apart. The second housing (12) is provided with a first through hole. The guide rods (151) pass through the first through hole and the lower end of the guide rods (151) is fixedly connected to the first housing (11). The portion of the guide rods (151) located between the first housing (11) and the second housing (12) is provided with an elastic element (152). The connecting assembly (15) further includes a first connector (153) and a first threaded connector (154). The first connector (153) passes through the second through hole, and the lower end of the first connector (153) is fixedly connected to the first housing (11). The upper end of the first connector (153) is located in the second through hole, and the upper end of the first connector (153) is provided with a first threaded groove (1531). The first threaded connector (154) includes a connected screw portion (1541) and an operating portion (1542). The screw portion (1541) is screwed into the first threaded groove (1531), and the operating portion (1542) protrudes from the second through hole. The operating portion (1542) is used to connect with the operating component. The operating part (1542) is subjected to force that causes the first housing (11) and the second housing (12) to move closer to each other or further away from each other.

6. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The clamping mechanism (30) includes a connecting rod (31) and a clamping assembly (32). The connecting rod (31) includes a rod body (311), and the two ends of the rod body (311) are respectively provided with a first connecting block (312) and a second connecting block (313). The first connecting block (312) is connected to the side of the first housing (11) along its length, and the second connecting block (313) is connected to the clamping assembly (32).

7. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 6, characterized in that, The clamping assembly (32) includes a base (321), a first clamping member (322), a second clamping member (323), a threaded member (324), and a locking member (325); The base (321) is connected to the second connecting block (313), and the base (321) has a first groove and a second groove that are spaced apart vertically; The first end of the first clamping member (322) is rotatably mounted in the first groove via the first connecting shaft (326), and the second end of the first clamping member (322) is provided with a first through groove; The first end of the second clamping member (323) is rotatably mounted in the second groove via the second connecting shaft (327), and the second end of the second clamping member (323) is provided with a second through groove; The lower end of the threaded component (324) is provided with a mounting block (3241), which is rotatably mounted in the second through groove via a third connecting shaft (328), and the locking component (325) is connected to the threaded component (324). The clamping assembly (32) has a clamping mode and an unlocking mode. When the clamping assembly (32) is in the clamping mode, the first clamping member (322) and the second clamping member (323) abut against each other. The threaded member (324) is located in the first through groove. The locking member (325) is located above the first through groove and the lower end face of the locking member (325) abuts against the upper surface of the second end of the first clamping member (322). The clamping assembly (32) clamps the nuclear power plant finger sleeve. When the clamping assembly (32) is in the unlocking mode, the locking member (325) releases the first clamping member (322), the threaded member (324) rotates out of the first through groove, the second clamping member (323) and the first clamping member (322) can rotate relative to each other, and the clamping assembly (32) releases the nuclear power plant finger sleeve.

8. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The first housing (11) is provided with a detection component (40) on the side opposite to the clamping mechanism (30). The detection component (40) includes a mounting base (41) and a limit sensor (42) mounted on the mounting base (41).

9. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The drive motor (21) is installed inside the first housing (11); The first housing (11) is provided with heat dissipation holes on both sides of the drive motor (21); The drive mechanism (20) includes a cooling fan (22), which is located inside the first housing (11) and is positioned opposite to the heat dissipation hole.

10. The nuclear power plant finger sleeve roller type insertion and withdrawal device according to claim 1, characterized in that, The first housing (11) is also provided with a display (23).

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