Nuclear power plant valve switch operation device

Abstract

The utility model discloses a nuclear power plant valve switch operation device which comprises an electric torque wrench, a force arm wrench and a clamping mechanism. The force arm wrench is connected with a spline of an output joint of the electric torque wrench; the clamping mechanism comprises a connecting cylinder and a clamping assembly; the connecting cylinder is used for being connected with an output connector, the clamping assemblies are used for clamping a connecting column of a hand wheel of a nuclear power plant valve, each clamping assembly comprises a positioning plate, a positioning column, a clamping rod and a first fastener, the positioning columns are movably connected with the positioning plates, and first limiting holes and second limiting holes are formed in the positioning columns in the axial direction at intervals; the first limiting hole and the second limiting hole are correspondingly communicated, the clamping rod is arranged in the first limiting hole in a penetrating mode, and the first fastener is installed in the second limiting hole to fasten the clamping rod. The device is simple to operate, can quickly open and close the nuclear power plant valve and accurately control the opening and closing torque, is high in efficiency, reduces the time cost and the labor cost, and avoids the risk of damaging the nuclear power plant valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant valve operating tool field, especially nuclear power plant valve switch operating device. BACKGROUND

[0002] Nuclear power plant is equipped with numerous valves, including medium-sized valve and large-sized valve, the existing valve switch method usually is manual switch, F type wrench switch, has certain requirement to the physical strength, strength and skill of operating personnel. The valve cannot be turned if the strength is small, the valve is easily damaged if the strength is big, the physical strength of operating personnel is also a test when the number of turns is much. And different people have different standards for the strength of valve switch, it is easy to appear "not tight, leakage", or "too tight, overpressure wear, valve life reduction" and so on. SUMMARY

[0003] The utility model provides a nuclear power plant valve switch operating device to solve the problem of low efficiency of manual operation of related art.

[0004] The utility model adopts the technical scheme that a nuclear power plant valve switch operating device is constructed, including electric torque wrench, force arm wrench and clamping mechanism, the force arm wrench is connected with the spline of the output connector of electric torque wrench,

[0005] The clamping mechanism includes connecting barrel and a plurality of clamping components connected with the lower end surface of connecting barrel, the connecting barrel is used for connecting with the output connector, the clamping component is used for clamping the connecting column of hand wheel of nuclear power plant valve, and each clamping component includes positioning plate, positioning column, at least two clamping rods and at least two first fasteners, one end of the positioning plate is connected with the lower end surface of connecting barrel, the positioning column is movably connected with the positioning plate, the positioning column is spaced apart along its axial direction and is provided with a plurality of first limit holes and a plurality of second limit holes, the first limit hole is correspondingly and continuously arranged with the second limit hole, the clamping rod is arranged in the first limit hole, and the first fastener is installed in the second limit hole to fasten the clamping rod.

[0006] In some embodiments, the force arm wrench includes spline sleeve, second fastener, first handle and first connecting piece,

[0007] The spline sleeve is used to fit onto the spline. The side wall of the spline sleeve has a through hole that penetrates its inner and outer walls. The second fastener is used to pass through the through hole to abut against the outer surface of the spline. The side wall of the spline sleeve also has a mounting part with a first threaded groove. The first handle is long and rod-shaped, and a second threaded groove is provided at the first end of the first handle along its length. The first connector includes a first columnar body. The outer surface of the first columnar body is provided with a first external thread and a second external thread at intervals. The first external thread is connected to the first threaded groove, and the second external thread is connected to the second threaded groove, so that the first handle is connected to the spline sleeve.

[0008] In some embodiments, the first columnar body has a first annular protrusion in the middle, the first annular protrusion defines the first columnar body into a first columnar portion and a second columnar portion, the first columnar portion has the first external thread, and the second columnar portion has the second external thread.

[0009] In some embodiments, the lever arm wrench further includes a second handle and a second connector; the second handle is detachably connected to the first handle via the second connector.

[0010] In some embodiments, the second end of the first handle in the length direction is provided with a third threaded groove;

[0011] The second handle is in the shape of a long rod, and the first end of the second handle in the length direction is provided with a fourth threaded groove;

[0012] The second connector includes a second columnar body, and the outer surface of the second columnar body is provided with a third external thread and a fourth external thread spaced apart. The third external thread is connected to the third thread groove, and the fourth external thread is connected to the fourth thread groove.

[0013] In some embodiments, the second columnar body has a second annular protrusion in the middle, the second annular protrusion defines a third columnar portion and a fourth columnar portion of the second columnar body, the third columnar portion has the third external thread, and the fourth columnar portion has the fourth external thread.

[0014] In some embodiments, the connecting cylinder includes a cylinder body and a connecting body disposed within the cylinder body, the connecting body having a connecting groove for connecting with the output connector.

[0015] In some embodiments, the inner wall of the cylinder is provided with a plurality of slots, and the outer side of the connector is provided with a plurality of protrusions, the protrusions being engaged in the slots.

[0016] In some embodiments, the lower end face of the cylinder is provided with a plurality of grooves at intervals, and one end of the positioning plate is provided with a protrusion, the protrusion being engaged in the groove, and the protrusion being connected to the groove by a fastener.

[0017] In some embodiments, the positioning plate is provided with a limiting groove extending along its length; the upper end of the positioning post is provided with a connecting hole; the clamping mechanism further includes a connecting rod, the upper end of the connecting rod is provided with an operating handle, the outer diameter of the positioning post is larger than the groove width of the limiting groove, the positioning post is located on the lower side of the positioning plate, and the lower end of the connecting rod passes through the limiting groove and is connected to the connecting hole.

[0018] The following are the beneficial effects of implementing this utility model: the nuclear power plant valve switching operation device is simple to operate, can quickly open and close nuclear power plant valves, accurately control the switching torque, is highly efficient, reduces time and labor costs, and avoids the risk of damaging nuclear power plant valves. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the structure of a nuclear power plant valve switching operation device in some embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the electric torque wrench in some embodiments of this utility model;

[0022] Figure 3 This is a structural schematic diagram of a lever arm wrench in some embodiments of this utility model;

[0023] Figure 4 This is one of the exploded views of the lever arm wrench in some embodiments of this utility model;

[0024] Figure 5 This is the second exploded view of the lever arm wrench in some embodiments of this utility model;

[0025] Figure 6 This is one of the structural schematic diagrams of the clamping mechanism in some embodiments of this utility model;

[0026] Figure 7 This is the second schematic diagram of the clamping mechanism in some embodiments of this utility model;

[0027] Figure 8 This is an exploded view of the clamping mechanism in some embodiments of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the cylinder in some embodiments of this utility model;

[0029] Figure 10 This is a schematic diagram illustrating the application of the nuclear power plant valve switching operation device in some embodiments of this utility model. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] See Figures 1 to 10 This utility model discloses a valve switching operation device for a nuclear power plant, which can be used to open and close a nuclear power plant valve 100. The nuclear power plant valve 100 includes, but is not limited to, medium-sized valves and large valves, such as medium-sized gate valves, medium-sized stop valves and medium-sized regulating valves, as well as large gate valves, large stop valves and large regulating valves.

[0034] The valve switching operation device of the nuclear power plant includes an electric torque wrench 10, a lever arm wrench 20, and a clamping mechanism 30; the lever arm wrench 20 is connected to the spline 12 of the output connector 11 of the electric torque wrench 10.

[0035] The clamping mechanism 30 includes a connecting cylinder 31 and a plurality of clamping assemblies 32 connected to the lower end face of the connecting cylinder 31. The clamping assemblies 32 may be four or other numbers. The connecting cylinder 31 is used to connect to the output connector 11. The clamping assemblies 32 are used to clamp the connecting posts of the handwheels of nuclear power plant valves. Each clamping assembly 32 includes a positioning plate 321, a positioning post 322, at least two clamping rods 323, and at least two first fasteners 324. The positioning plate 321... One end of the positioning post 322 is connected to the lower end face of the connecting cylinder 31. The positioning post 322 is movably connected to the positioning plate 321. The positioning post 322 is provided with a plurality of first limiting holes 3221 and a plurality of second limiting holes 3222 spaced apart along its axial direction. The first limiting holes 3221 and the second limiting holes 3222 are correspondingly connected and arranged. The clamping rod 323 passes through the first limiting hole 3221. The first fastener 324 is installed in the second limiting hole 3222 to fasten the clamping rod 323. The clamping rod 323 is generally in the shape of a round rod. The first fastener 324 includes, but is not limited to, fastening bolts, fastening screws, or fastening pins.

[0036] like Figure 2 As shown, in some embodiments, the electric torque wrench 10 is equipped with a gearbox 13, the output connector 11 can be connected to the gearbox 13, the spline 12 is sleeved on the outer periphery of the output connector 11 and connected to the gearbox 13, and the electric torque wrench 10 can also be equipped with a lithium-ion battery 14, which can be a 5.2AH lithium battery. The gearbox 13 can be a multi-stage planetary gearbox, and the electric torque wrench 10 can be equipped with a high-speed brushless motor with adjustable speed. The electric torque wrench 10 is also equipped with a display for speed, torque, and revolutions, as well as four setting buttons, a mechanical high-speed / low-speed gear switching switch, etc., without specific limitations. Of course, the electric torque wrench 10 can be any existing electric torque wrench, without specific limitations.

[0037] like Figures 3 to 5As shown, in some embodiments, the lever arm wrench 20 includes a splined sleeve 21, a second fastener 22, a first handle 23, and a first connector 24. The splined sleeve 21 is fitted onto the spline 12, and the side wall of the splined sleeve 21 has a through hole 211 penetrating its inner and outer walls. The second fastener 22 is used to pass through the through hole 211 to abut against the outer surface of the spline 12. The side wall of the splined sleeve 21 also has a mounting portion 212, which has a first threaded groove 213. The first handle 23 is long and rod-shaped, and the first end of the first handle 23 in the length direction has a second threaded groove 231. The first connector 24 includes a first columnar body 241, and the outer surface of the first columnar body 241 is provided with a first external thread and a second external thread spaced apart. The first external thread is connected to the first threaded groove 213, and the second external thread is connected to the second threaded groove 231, so that the first handle 23 is connected to the splined sleeve 21. When the electric torque wrench 10 is in operation, the operator can hold the first handle 23 away from the splined socket 21, which makes the electric torque wrench 10 less prone to shaking and vibration, and can improve the stability of torque output.

[0038] Preferably, the second fastener 22 includes, but is not limited to, fastening bolts, fastening screws, or fastening pins.

[0039] like Figures 3 to 5 As shown, in some embodiments, the first columnar body 241 has a first annular protrusion 242 in the middle, which defines the first columnar body 241 into a first columnar portion 2411 and a second columnar portion 2412. The first columnar portion 2411 is provided with the first external thread, and the second columnar portion 2412 is provided with the second external thread.

[0040] like Figures 3 to 5 As shown, in some embodiments, the lever arm wrench 20 further includes a second handle 25 and a second connector 26; the second handle 25 is detachably connected to the first handle 23 via the second connector 26. The first handle 23 has a third threaded groove 232 at its second end along its length; the second handle 25 is rod-shaped, and a fourth threaded groove 251 is provided at its first end along its length; the second connector 26 includes a second columnar body 261, the outer surface of which is provided with a third external thread and a fourth external thread spaced apart, the third external thread connecting to the third threaded groove 232, and the fourth external thread connecting to the fourth threaded groove 251.

[0041] like Figures 3 to 5As shown, in some embodiments, the second columnar body 261 has a second annular protrusion 262 in the middle, which defines the second columnar body 261 into a third columnar portion 2611 and a fourth columnar portion 2612. The third columnar portion 2611 is provided with the third external thread, and the fourth columnar portion 2612 is provided with the fourth external thread.

[0042] like Figures 3 to 5 As shown, in some embodiments, the first handle 23 may also be provided with a first protective cover 27, and the second handle 25 may also be provided with a second protective cover 28. Both the first protective cover 27 and the second protective cover 28 may be rubber protective covers to improve the hand-holding comfort of the staff.

[0043] like Figures 6 to 9 As shown, in some embodiments, the connecting cylinder 31 includes a cylinder body 311 and a connecting body 312 disposed within the cylinder body 311. The connecting body 312 is provided with a connecting groove 3121 for connecting with the output connector 11. The side wall of the connecting groove 3121 may be provided with a self-locking button 3123 to assist in fixing the output connector 11.

[0044] like Figure 8 As shown, the inner wall surface of the cylinder 311 is provided with a plurality of slots 3111, which are spaced apart along the circumferential direction of the axis of the cylinder 311. The outer surface of the connecting body 312 is provided with a plurality of protrusions 3122, which are engaged in the slots 3111. The connecting cylinder 31 may also include a cover plate 313 and a fastening bolt 314, which is used to install the cover plate 313 onto the end face of the cylinder 311 to fasten the connecting body 312. In some embodiments, the connecting cylinder 31 may be a universal joint sleeve.

[0045] like Figure 8 and Figure 9 As shown, the lower end face of the cylinder 311 is provided with a plurality of grooves 3112 at intervals, and one end of the positioning plate 321 is provided with a protrusion 3211. The protrusion 3211 is engaged in the groove 3112, and the protrusion 3211 and the groove 3112 are connected by a fastener 327. The fastener 327 includes a fastening bolt or a fastening screw.

[0046] In some embodiments, the positioning plate 321 is provided with a limiting groove 3212 extending along its length; the upper end of the positioning post 322 is provided with a connecting hole 3223; the clamping mechanism 30 further includes a connecting rod 325, the upper end of which is provided with an operating handle 326; the outer diameter of the positioning post 322 is larger than the groove width of the limiting groove 3212; the positioning post 322 is located on the lower side of the positioning plate 321; and the lower end of the connecting rod 325 passes through the limiting groove 3212 and is connected to the connecting hole 3223. Preferably, the operating handle 326 may be, but is not limited to, a ratchet handle.

[0047] Combination Figure 10 As shown, when using the clamping mechanism 30, firstly, according to the specifications of the handwheel 101 of different types and diameters of nuclear power plant valves 100, select and install the corresponding clamping rod 323 to clamp the connecting column 102 of the handwheel 101. Connect the electric torque wrench 10 to the connecting cylinder 31, hold the lever arm wrench 20, and start the electric torque wrench 10 to begin valve opening and closing operations. The electric torque wrench 10 can precisely control the opening and closing torque of the nuclear power plant valve 100, and immediately stop when the set torque is reached to prevent sudden exceedance of the limit torque of the nuclear power plant valve 100 during valve opening and closing operations, thereby effectively protecting the valve and operators. It can achieve safe, fast, and efficient valve opening and closing. In addition, the electric torque wrench 10 has a turn setting function, which is more suitable for multi-turn opening and closing operations, such as hundreds or thousands of turns. And by setting how many turns to open the valve and how many turns to close it, impact contact between the valve sealing surfaces can be effectively avoided. In addition, it can avoid the impact of the operator's reaction force.

[0048] This nuclear power plant valve switching device is simple to operate, enabling rapid switching of nuclear power plant valves, precise control of switching torque, high efficiency, reduced time and labor costs, and avoidance of the risk of damaging nuclear power plant valves.

[0049] 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 valve switch operating device for a nuclear power plant, characterized by, The utility model provides a torque wrench, which comprises an electric torque wrench (10), a force arm wrench (20) and a clamping mechanism (30); the force arm wrench (20) is connected with the spline (12) of an output joint (11) of the electric torque wrench (10); The clamping mechanism (30) comprises a connecting cylinder (31) and a plurality of clamping assemblies (32) connected with the lower end surface of the connecting cylinder (31); the connecting cylinder (31) is used for being connected with the output joint (11), and the clamping assemblies (32) are used for clamping the connecting column of the hand wheel of a valve in a nuclear power plant; each clamping assembly (32) comprises a positioning plate (321), a positioning column (322), at least two clamping rods (323) and at least two first fasteners (324); one end of the positioning plate (321) is connected with the lower end surface of the connecting cylinder (31); the positioning column (322) is movably connected with the positioning plate (321); the positioning column (322) is provided with a plurality of first limiting holes (3221) and a plurality of second limiting holes (3222) at intervals along the axial direction of the positioning column (322); the first limiting holes (3221) and the second limiting holes (3222) are correspondingly and continuously provided; the clamping rods (323) pass through the first limiting holes (3221); and the first fasteners (324) are installed in the second limiting holes (3222) to fasten the clamping rods (323).

2. The nuclear power plant valve switch operating device according to claim 1, characterized in that, The force arm wrench (20) comprises a spline sleeve (21), a second fastener (22), a first handle (23) and a first connecting piece (24); The spline sleeve (21) is used for being sleeved on the spline (12); the side wall of the spline sleeve (21) is provided with a through hole (211) penetrating the inner and outer wall surfaces thereof; the second fastener (22) is used for penetrating the through hole (211) to abut against the outer surface of the spline (12); the side wall of the spline sleeve (21) is further provided with a mounting portion (212) provided with a first threaded groove (213); the first handle (23) is in the shape of a long rod; the first end of the first handle (23) in the length direction is provided with a second threaded groove (231); and the first connecting piece (24) comprises a first columnar main body (241) provided with a first outer thread and a second outer thread at intervals on the outer surface thereof; the first outer thread is connected with the first threaded groove (213); and the second outer thread is connected with the second threaded groove (231), so that the first handle (23) is connected with the spline sleeve (21).

3. The nuclear power plant valve switch operating device according to claim 2, characterized in that, The first columnar main body (241) is provided with a first annular protruding portion (242) in the middle portion thereof; the first annular protruding portion (242) divides the first columnar main body (241) into a first columnar portion (2411) and a second columnar portion (2412); the first outer thread is arranged on the first columnar portion (2411); and the second outer thread is arranged on the second columnar portion (2412).

4. The nuclear power plant valve switch operating device according to claim 3, characterized in that, The force arm wrench (20) further comprises a second handle (25) and a second connecting piece (26); the second handle (25) is detachably connected with the first handle (23) through the second connecting piece (26).

5. The nuclear power plant valve switch operating device according to claim 4, characterized in that A second end of the first handle (23) in the length direction is provided with a third threaded groove (232); The second handle (25) is in the shape of a long rod, and a first end of the second handle (25) in the length direction is provided with a fourth threaded groove (251); The second connecting piece (26) comprises a second columnar main body (261), and an outer surface of the second columnar main body (261) is provided with a third external thread and a fourth external thread at intervals, the third external thread is connected with the third threaded groove (232), and the fourth external thread is connected with the fourth threaded groove (251).

6. The nuclear power plant valve switch operating device according to claim 5, characterized in that A middle part of the second columnar main body (261) is provided with a second annular protrusion (262), the second annular protrusion (262) divides the second columnar main body (261) into a third columnar part (2611) and a fourth columnar part (2612), the third columnar part (2611) is provided with the third external thread, and the fourth columnar part (2612) is provided with the fourth external thread.

7. The nuclear power plant valve switch operating device of claim 1, wherein The connecting cylinder (31) comprises a cylinder body (311) and a connecting body (312) arranged in the cylinder body (311), and the connecting body (312) is provided with a connecting groove (3121) for connecting with the output connector (11).

8. The nuclear power plant valve switch operating device according to claim 7, characterized in that An inner wall surface of the cylinder body (311) is provided with a plurality of clamping grooves (3111), and an outer side surface of the connecting body (312) is provided with a plurality of protrusions (3122), the protrusions (3122) are clamped in the clamping grooves (3111).

9. The nuclear power plant valve switch operating device of claim 7, wherein, A lower end surface of the cylinder body (311) is provided with a plurality of recesses (3112) at intervals, a surface of one end of the positioning plate (321) is provided with a protrusion, the protrusion is clamped in the recesses (3112), and the protrusion and the recesses (3112) are connected through a fixing piece.

10. The nuclear power plant valve switch operating device of claim 7, wherein, The positioning plate (321) is provided with a limiting groove extending along the length direction thereof, an upper end of the positioning column (322) is provided with a connecting hole, the clamping mechanism (30) further comprises a connecting rod, an upper end of the connecting rod is provided with an operating handle, an outer diameter of the positioning column (322) is greater than a groove width of the limiting groove, the positioning column (322) is located at a lower side of the positioning plate (321), and a lower end of the connecting rod is arranged in the limiting groove and connected with the connecting hole.

Images