Teaching aid for simulating disassembly and assembly of flywheel of main pump of wet winding motor

Abstract

The utility model belongs to the technical field of dismounting teaching aids, and discloses a teaching aid for simulating dismounting of a wet winding motor main pump flywheel, the teaching aid comprises a simulation body and a frame body, the simulation body comprises a first simulation part and a second simulation part, the first simulation part is provided with a plurality of first screw holes along the circumferential direction of the first simulation part, and the second simulation part is provided with a plurality of second screw holes along the circumferential direction of the second simulation part; the second simulation part is provided with a plurality of second screw holes in the circumferential direction of the second simulation part, the plurality of first screw holes, the plurality of second screw holes and the plurality of fixing assemblies are in one-to-one correspondence, each fixing assembly comprises a super nut, a screw and a plurality of bolts, the super nut is provided with a plurality of third screw holes in one-to-one correspondence with the bolts in the circumferential direction of the super nut, and the screw is in threaded connection with the first screw holes and the second screw holes. The bolt is in threaded connection with the third screw hole and can tightly abut against the surface of the first simulation part or the second simulation part; the frame body is used for fixing and supporting the simulation body. The teaching aid for simulating disassembly and assembly of the main pump flywheel of the wet winding motor is simple in structure, high in practicability and suitable for simulation drilling of disassembly and assembly of the main pump flywheel of the wet winding motor.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly teaching aids, in particular to a teaching aid for simulating the disassembly and assembly of a main pump flywheel of a wet winding motor. Background Art

[0002] The wet-winding motor main pump is a key and important equipment in a nuclear power plant and the "heart" of the nuclear power unit. It is used to circulate high-pressure water to cool and extract heat from the pressurized water core. There are two main pumps installed under each evaporator, for a total of four.

[0003] The regular maintenance and fault repair of the wet-winding motor main pump are inseparable from the disassembly and assembly of the wet-winding motor main pump flywheel. Specifically, the flywheel is a part of the wet-winding motor main pump. Since the wet-winding motor main pump flywheel is located inside the heat shield chamber, it is not possible to disassemble it on site. If flywheel related repairs are required, the wet-winding motor main pump needs to be lifted out of the heat shield chamber using lifting equipment in advance, and then disassembled, repaired and reassembled, and finally the wet-winding motor main pump is reinstalled into the heat shield chamber.

[0004] During the disassembly and assembly of the wet-winding motor main pump, a flywheel disassembly process is required. Specifically, the flywheel is connected to the pump body of the main pump through multiple fixing components, and the fixing components include multiple super nuts. During the disassembly process, it is necessary to follow the principle of symmetry to remove the bolts on the super nuts, and it is required to be carried out according to the torque distribution. The above process requires the operator to have skilled operating skills and the operation process to be as smooth and error-free as possible, which requires repeated operation drills for trainees before practical operation. If the actual structure of the wet-winding motor main pump is directly selected as a direct teaching aid, its manufacturing cost is high, the manufacturing cycle is long, and the simulation drill of the flywheel component maintenance work does not require the use of a complete wet-winding motor main pump core package. Therefore, under the influence of comprehensive factors such as manufacturing cost, manufacturing difficulty, functional integrity, and simulation environment authenticity, designing a teaching aid for the disassembly and assembly of the flywheel of the wet-winding motor main pump has become the current direction of efforts of technical personnel in the field. Utility Model Content

[0005] The purpose of the utility model is to provide a teaching aid for simulating the disassembly and assembly of a flywheel of a main pump of a wet-winding motor, which is used for trainees to simulate the disassembly and assembly of the flywheel of the main pump of a wet-winding motor, and is suitable for providing personnel training for the maintenance of the main pump of a wet-winding motor.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A teaching aid for simulating the disassembly and assembly of a main pump flywheel of a wet winding motor, comprising:

[0008] A simulation body, comprising a first simulation part and a second simulation part, wherein the first simulation part and the second simulation part are detachably connected via a plurality of fixing components, wherein the first simulation part is provided with a plurality of first screw holes along its circumference, and the second simulation part is provided with a plurality of second screw holes along its circumference, wherein the plurality of first screw holes, the plurality of second screw holes, and the plurality of fixing components correspond to each other in a one-to-one manner, and each of the fixing components comprises a super nut, a screw rod, and a plurality of bolts, wherein the super nut is provided with a plurality of third screw holes along its circumference corresponding to the bolts in a one-to-one manner, the screw rod is screwed with the first screw hole and the second screw hole, and the bolt is screwed with the third screw hole and can be tightly pressed against the surface of the first simulation part or the second simulation part;

[0009] The frame is used for fixing and supporting the simulation body.

[0010] Preferably, the first simulation part is fixedly provided with a first lifting lug, and the second simulation part is fixedly provided with a second lifting lug.

[0011] Preferably, the number of the third screw holes on the bolt and the super nut is ten in one-to-one correspondence, and the ten third screw holes are arranged at equal intervals along the circumference of the super nut.

[0012] Preferably, the frame body comprises a support frame, legs and a base which are fixedly arranged in sequence from top to bottom, and the support frame is provided with a fixed support groove, and the fixed support groove is used for fixedly supporting the simulation body.

[0013] Preferably, a first positioning groove is provided on the peripheral side of the first simulation part, and a first positioning head is protrudingly provided on the side of the fixed support groove, and the first positioning head can be plugged into the first positioning groove.

[0014] Preferably, a second positioning groove is provided on the peripheral side of the second simulation part, and a second positioning head is protruding from the side of the fixed support groove, and the second positioning head can be plugged into the second positioning groove.

[0015] Preferably, the frame body further comprises a tool receiving plate, which is fixed on the supporting legs and located below the supporting frame.

[0016] Preferably, the legs are welded on the base, and the support frame and the tool receiving plate are respectively welded on the legs.

[0017] Preferably, reinforcing ribs are fixedly connected between the legs and the base.

[0018] Preferably, the base is formed by welding a plurality of plate frames end to end in sequence.

[0019] Beneficial effects:

[0020] The utility model provides a teaching aid for simulating the disassembly and assembly of a flywheel of a wet-winding motor main pump. The first simulation part and the second simulation part are used to respectively simulate the pump body and the flywheel of an actual wet-winding motor main pump. During the practical operation, the first simulation part and the second simulation part are fixedly connected by a plurality of fixed components. The simulation body is lifted out and fixedly supported on a frame using a lifting device. Then, the trainees can perform disassembly exercises according to the steps of disassembling the flywheel of the wet-winding motor main pump in the actual operation process, that is, the disassembly process of the plurality of fixed components, until the trainees are proficient in the operation and reach the practical operation standard. The teaching aid can be used by trainees to simulate the disassembly and assembly of the flywheel of the wet-winding motor main pump, and is suitable for providing personnel training for the maintenance of the wet-winding motor main pump. There is no need to specially equip the wet-winding motor main pump with an actual structure. On the premise of ensuring that reliable and sufficient exercises can be provided to trainees, the cost can be effectively reduced, and the practicality is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a teaching aid for simulating the disassembly and assembly of a main pump flywheel of a wet winding motor according to the utility model;

[0022] Figure 2 This is a front view of a teaching aid for simulating the disassembly and assembly of a main pump flywheel of a wet-winding motor according to the utility model;

[0023] Figure 3 The utility model is a side view of a teaching aid for simulating the disassembly and assembly of a main pump flywheel of a wet winding motor.

[0024] In the figure:

[0025] 1. simulation body; 11. first simulation part; 111. first lifting ear; 112. first positioning groove; 12. second simulation part; 121. second lifting ear; 122. second positioning groove;

[0026] 2. frame; 21. support frame; 211. fixed support groove; 212. first positioning head; 213. second positioning head; 22. legs; 23. base; 24. tool receiving plate; 25. reinforcing ribs;

[0027] 3. Fixing assembly; 31. Super nut; 32. Screw rod; 33. Bolt. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] This embodiment provides a teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor. Figures 1 to 3 As shown, the teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of the wet winding motor includes a simulation body 1 and a frame 2. Among them, the simulation body 1 includes a first simulation part 11 and a second simulation part 12, and the first simulation part 11 and the second simulation part 12 are detachably connected through a plurality of fixing components 3. The first simulation part 11 is provided with a plurality of first screw holes along its own circumference, and the second simulation part 12 is provided with a plurality of second screw holes along its own circumference. The plurality of first screw holes, the plurality of second screw holes, and the plurality of fixing components 3 correspond to each other one by one. Each fixing component 3 includes a super nut 31, a screw rod 32, and a plurality of bolts 33. The super nut 31 is provided with a plurality of third screw holes corresponding to the bolts 33 along its own circumference. The screw rod 32 is screwed with the first screw hole and the second screw hole, and the bolt 33 is screwed with the third screw hole and can be tightly pressed against the surface of the first simulation part 11 or the second simulation part 12. The frame 2 is used to fix and support the simulation body 1.

[0033] In this embodiment, the first simulation part 11 and the second simulation part 12 are used to respectively simulate the pump body and the flywheel of the actual wet-winding motor main pump. During the practical operation, the first simulation part 11 and the second simulation part 12 are fixedly connected by multiple fixing components 3, and the simulation body 1 is lifted out and fixedly supported on the frame 2 using a lifting device. Then, the trainees can perform disassembly exercises according to the steps of disassembling the flywheel of the wet-winding motor main pump in the actual operation process, that is, the disassembly process of multiple fixing components 3, until the trainees are proficient in the operation and meet the practical operation standards. The teaching aid can be used by trainees to simulate the disassembly and assembly of the wet-winding motor main pump flywheel, and is suitable for providing personnel training for the maintenance of the wet-winding motor main pump. There is no need to specially equip the wet-winding motor main pump with an actual structure. On the premise of ensuring that reliable and sufficient exercises can be provided to trainees, the cost is effectively reduced and the practicability is strong.

[0034] Specifically, the first simulation part 11 and the second simulation part 12 are fixed by the fixing assembly 3 as follows: the first screw hole and the second screw hole are penetrated by the screw rod 32, and the screw rod 32 is threadedly connected with the first screw hole and the second screw hole. Then, the super nut 31 is screwed into one end of the screw rod 32. The super nut 31 is located on the side corresponding to whichever of the first simulation part 11 and the second simulation part 12 simulates the flywheel, and is tightly attached to the side surface of the simulation part. Then, a plurality of bolts 33 are screwed into the super nut 31, and the bolts 33 are screwed into and screwed with the third screw hole, and can be tightly attached to the side surface of the above-mentioned simulation part.

[0035] In this embodiment, the first simulation part 11 is fixedly provided with a first lifting lug 111, and the second simulation part 12 is fixedly provided with a second lifting lug 121. By providing the first lifting lug 111 and the second lifting lug 121, it is convenient for the lifting equipment to lift and move the simulation body 1 as a whole through the first lifting lug 111 and / or the second lifting lug 121. It is also convenient for trainees to become familiar with and practice the lifting process of the main pump of the wet winding motor in the actual operation process.

[0036] In this embodiment, the first lifting lug 111 is welded and disposed on the top of the first simulation portion 11 . The second lifting lug 121 is welded and disposed on the top of the second simulation portion 12 .

[0037] In this embodiment, the number of the third screw holes on the bolt 33 and the super nut 31 is set to ten in a one-to-one correspondence, and the ten third screw holes are arranged at equal intervals along the circumference of the super nut 31. Such an arrangement can fully restore the actual arrangement of the RUV650-870 model wet winding motor main pump flywheel on the fixing assembly 3, and further restore the operating environment that the trainees deal with.

[0038] In this embodiment, the frame 2 includes a support frame 21, a leg 22 and a base 23 which are fixedly arranged in sequence from top to bottom. The support frame 21 is provided with a fixed support groove 211, and the fixed support groove 211 is used to fix the support simulation body 1. In actual operation, the wet-winding motor main pump is located on a trapezoidal ground, in a closed chamber space surrounded by walls on four sides. The lifting passage through which the hook of the lifting equipment can enter and move is located in the lower right corner of the trapezoidal ground, and the flywheel is located above the wet-winding motor main pump. Therefore, when it comes to flywheel maintenance, a special trolley is required to enter the chamber to realize the removal and transportation of the wet-winding motor main pump. Therefore, the setting of the frame 2 can correspond to the special trolley for simulation maintenance, and the entire second simulation part 12 can be suspended at a certain height from the ground.

[0039] In this embodiment, the base 23 is formed by welding a plurality of plate frames end to end. The base 23 is formed by welding four long square structure plate frames. The base 23 is rectangular, and the length and width are both set to 0.82m. In this embodiment, the height of the frame 2 is set to 1.2m.

[0040] In this embodiment, a first positioning groove 112 is provided on the circumferential side of the first simulation part 11, and a first positioning head 212 is convexly provided on the side of the fixed support groove 211, and the first positioning head 212 can be plugged into the first positioning groove 112. A second positioning groove 122 is provided on the circumferential side of the second simulation part 12, and a second positioning head 213 is convexly provided on the side of the fixed support groove 211, and the second positioning head 213 can be plugged into the second positioning groove 122. When the first simulation part 11 is placed in place relative to the support frame 21, the first positioning groove 112 is plugged into the first positioning head 212; when the second simulation part 12 is placed in place relative to the support frame 21, the second positioning groove 122 is plugged into the second positioning head 213. In this way, the first simulation part 11 and the second simulation part 12 can be positioned relative to the support frame 21, and the circumferential deflection of the simulation body 1 can be avoided.

[0041] In this embodiment, the frame body 2 further includes a tool receiving tray 24, which is fixed on the legs 22 and located below the support frame 21. By providing the tool receiving tray 24, the operating tools in the disassembly and assembly process can be reliably placed.

[0042] In this embodiment, the legs 22 are welded to the base 23, and the support frame 21 and the tool receiving plate 24 are respectively welded to the legs 22. The welding connection method is simple to operate and has strong connection reliability and firmness.

[0043] In this embodiment, a reinforcing rib 25 is fixedly connected between the leg 22 and the base 23. By providing the reinforcing rib 25, the connection between the leg 22 and the base 23 can be further strengthened to ensure that the connection between the leg 22 and the base 23 is reliable and stable.

[0044] In this embodiment, the number of the legs 22 and the reinforcing ribs 25 can be adaptively adjusted according to actual conditions, and no further limitation is given here.

[0045] Exemplarily, the teaching aid provided in this embodiment for simulating the disassembly and assembly of the flywheel of the main pump of the wet-winding motor is used to describe the disassembly simulation process of the flywheel of the main pump of the wet-winding motor.

[0046] First, the simulation body 1 is hoisted and moved as a whole to the frame 2 by the hoisting equipment, so that the simulation body 1 is fixedly supported on the frame 2. In this example, ten fixing components 3 are provided, namely ten super nuts 31 and ten screw rods 32, and each super nut 31 is provided with ten bolts 33, that is, there are one hundred bolts 33. The ten super nuts 31 are marked, 1-10 in clockwise order, first, the 10 bolts 33 on the No. 1 super nut 31 are symmetrically loosened, and the loosening angle is 1-2 turns, and the 10 bolts 33 on the No. 6 super nut 31 at the symmetrical position of the No. 1 super nut 31 are symmetrically loosened, and the loosening angle should be consistent with the No. 1 super nut 31, and then the above operation is repeated for the No. 5, No. 10, No. 9, No. 4, No. 3, No. 6, No. 7, and No. 2 super nuts 31. After completing the first cycle, loosen the 10 bolts 33 on the No. 1 super nut 31 symmetrically for a second time, with a loosening angle of 1-2 circles, and then repeat the above operation on the No. 6, No. 5, No. 10, No. 9, No. 4, No. 3, No. 6, No. 7, and No. 2 super nuts 31 in turn until all the bolts 33 on the super nuts 31 are loosened. The above process should be performed by one trainee independently, and attention should be paid to the same loosening angle. If the bolts 33 are stuck, all super nuts 31 and bolts 33 should be reinstalled according to the installation method and the operation should be repeated.

[0047] Exemplarily, the following continues to use the teaching aids provided in this embodiment for simulating the disassembly and assembly of the main pump flywheel of the wet-winding motor to describe the installation simulation process of the main pump flywheel of the wet-winding motor.

[0048] Mark the 10 super nuts 31, 1-10 in clockwise order, and manually screw the bolts 33 on all the super nuts 31 into the screw rod 32. First, symmetrically tighten the 10 bolts 33 on the No. 1 super nut 31, and the tightening torque is 50% of the required torque. The 10 bolts 33 on the No. 6 super nut 31 at the symmetrical position of the No. 1 super nut 31 are symmetrically tightened, and the tightening torque is 50% of the required torque. Then, the above operation is repeated for the No. 5, No. 10, No. 9, No. 4, No. 3, No. 6, No. 7, and No. 2 super nuts 31. After completing the first cycle, the 10 bolts 33 on the No. 1 super nut 31 are tightened again symmetrically, and the tightening torque is 100% of the required torque. Then, the above operation is repeated for the No. 6, No. 5, No. 10, No. 9, No. 4, No. 3, No. 6, No. 7, and No. 2 super nuts 31.

[0049] The process should be operated independently by one trainee, and attention should be paid to the same tightening torque. If the bolt 33 is stuck, all super nuts 31 and bolts 33 should be removed according to the disassembly method and the operation should be repeated.

[0050] In this embodiment, the teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of the wet-winding motor can be used not only for the CAP1400 nuclear power unit, but also for other AP and CAP series pressurized water reactor units through appropriate modification, adjustment and proportional scaling.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor, characterized in that: include: A simulation body (1), comprising a first simulation part (11) and a second simulation part (12), wherein the first simulation part (11) and the second simulation part (12) are detachably connected via a plurality of fixing components (3), wherein the first simulation part (11) is provided with a plurality of first screw holes along its circumference, and the second simulation part (12) is provided with a plurality of second screw holes along its circumference, wherein the plurality of first screw holes, the plurality of second screw holes, and the plurality of fixing components (3) correspond to each other in a one-to-one manner, and each of the fixing components (3) comprises a super nut (31), a screw rod (32), and a plurality of bolts (33), wherein the super nut (31) is provided with a plurality of third screw holes along its circumference, which correspond to each other in a one-to-one manner with the bolts (33), wherein the screw rod (32) is screwed to the first screw hole and the second screw hole, and wherein the bolt (33) is screwed to the third screw hole and can be tightly pressed against the surface of the first simulation part (11) or the second simulation part (12); A frame (2) is used for fixedly supporting the simulation body (1).

2. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 1, characterized in that: The first simulation part (11) is fixedly provided with a first lifting lug (111), and the second simulation part (12) is fixedly provided with a second lifting lug (121).

3. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 1, characterized in that: The number of the third screw holes on the bolt (33) and the super nut (31) is ten, corresponding to each other, and the ten third screw holes are arranged at equal intervals along the circumference of the super nut (31).

4. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet-winding motor according to claim 1, characterized in that: The frame (2) comprises a support frame (21), supporting legs (22) and a base (23) which are fixedly arranged in sequence from top to bottom, and the support frame (21) is provided with a fixed support groove (211), and the fixed support groove (211) is used to fixedly support the simulation body (1).

5. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet-winding motor according to claim 4, characterized in that: A first positioning groove (112) is arranged on the peripheral side of the first simulation part (11), and a first positioning head (212) is protrudingly arranged on the side of the fixed support groove (211), and the first positioning head (212) can be plugged into the first positioning groove (112).

6. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 4, characterized in that: A second positioning groove (122) is provided on the peripheral side of the second simulation part (12), and a second positioning head (213) is protrudingly provided on the side of the fixed support groove (211), and the second positioning head (213) can be plugged into the second positioning groove (122).

7. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 4, characterized in that: The frame body (2) further comprises a tool receiving plate (24), wherein the tool receiving plate (24) is fixed on the supporting leg (22) and is located below the supporting frame (21).

8. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 7, characterized in that: The supporting legs (22) are welded to the base (23), and the supporting frame (21) and the tool receiving plate (24) are respectively welded to the supporting legs (22).

9. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 4, characterized in that: A reinforcing rib (25) is fixedly connected between the supporting leg (22) and the base (23).

10. The teaching aid for simulating the disassembly and assembly of the flywheel of the main pump of a wet winding motor according to claim 4, characterized in that: The base (23) is formed by welding a plurality of plate frames end to end in sequence.

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