Nuclear power plant valve hand wheel connecting device

Abstract

The utility model discloses a nuclear power plant valve hand wheel connecting device which comprises a connecting cylinder used for being connected with an electric torque wrench and a plurality of clamping mechanisms connected with the lower end face of the connecting cylinder, and each clamping mechanism comprises a positioning plate, a positioning column, at least two clamping rods and at least two fasteners. One end of the positioning plate is connected with the lower end face of the connecting cylinder, the positioning column is movably connected with the positioning plate, the positioning column is provided with a plurality of mounting through holes and a plurality of limiting through holes at intervals in the axial direction of the positioning column, the mounting through holes and the limiting through holes are correspondingly communicated, the at least two clamping rods penetrate through the mounting through holes, and the fasteners are mounted in the limiting through holes to fasten the clamping rods. And the at least two clamping rods are used for clamping a connecting column of a hand wheel of the nuclear power plant valve. The nuclear power plant valve hand wheel connecting device can achieve connection of a hand wheel of a nuclear power plant valve and an electric torque wrench, and is relatively simple in structural composition, low in manufacturing cost, adjustable in clamping rod position of the clamping mechanism and good in applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power tool technical field especially relates to a nuclear power plant valve hand wheel connecting device. BACKGROUND

[0002] Nuclear power plant is equipped with multiple medium-sized valves and large valves, the existing valve switch method usually is manual switch, F type spanner switch, has certain requirement to the physical strength, strength and skill of operating personnel. Small strength cannot turn valve, big strength is easy to damage valve, and the number of turns is a test to the physical strength of operating personnel. Moreover, different people have different standards for the strength of valve switching, and it is easy to appear "not tight enough, leakage", or "too tight, overpressure wear, reduced valve life" and so on, therefore, nuclear power plant is equipped with electric torque wrench to switch valve, but electric torque wrench cannot be directly connected with valve hand wheel, and a connecting tool is urgently needed to be developed. SUMMARY

[0003] The technical problem to be solved by the utility model lies in providing a nuclear power plant valve hand wheel connecting device to solve the problem that electric torque wrench cannot be connected with valve hand wheel in the prior art.

[0004] The utility model adopts the technical scheme that a nuclear power plant valve hand wheel connecting device is constructed, which comprises a connecting barrel for being connected with an electric torque wrench, and a plurality of clamping mechanisms connected with the lower end surface of the connecting barrel, each clamping mechanism comprises a positioning plate, a positioning column, at least two clamping rods and at least two fasteners, one end of the positioning plate is connected with the lower end surface of the connecting barrel, the positioning column is movably connected with the positioning plate, the positioning column is provided with a plurality of installation through holes and a plurality of limiting through holes along the axial direction thereof, the installation through holes and the limiting through holes are correspondingly and continuously arranged, at least two clamping rods are arranged in the installation through holes, and the fasteners are arranged in the limiting through holes to fasten the clamping rods, so that the at least two clamping rods clamp the connecting column of the valve hand wheel of the nuclear power plant.

[0005] In some embodiments, the lower end surface of the connecting barrel is provided with a plurality of grooves, the surface of one end of the positioning plate is provided with a convex part, the convex part is clamped in the groove, and the convex part and the groove are connected through a fixing piece.

[0006] In some embodiments, the groove width gradually increases from the center of the connecting barrel to the outside.

[0007] In some embodiments, the inner bottom wall of the groove is provided with a first fixing hole, the convex part is provided with a second fixing hole, and the fixing piece connects the first fixing hole and the second fixing hole.

[0008] In some embodiments, the positioning plate is provided with a limiting groove extending along the length direction thereof; the upper end of the positioning column is provided with a connecting hole; the clamping mechanism further comprises a connecting rod, the upper end of the connecting rod is provided with an operating handle, the outer diameter of the positioning column is greater than the groove width of the limiting groove, the positioning column is located at the lower side of the positioning plate, and the lower end of the connecting rod is arranged in the limiting groove and connected with the connecting hole.

[0009] In some embodiments, the clamping rod is a round rod.

[0010] In some embodiments, the connecting cylinder comprises a cylinder body and a connecting body arranged in the cylinder body, and the connecting body is provided with a connecting groove for connecting with the output connector of the electric torque wrench.

[0011] In some embodiments, the connecting groove is a square columnar groove.

[0012] In some embodiments, the side wall of the connecting groove is provided with at least one limiting hole, and the nuclear power plant valve hand wheel connecting device further comprises at least one limiting piece arranged in the limiting hole to abut against the output connector of the electric torque wrench.

[0013] In some embodiments, the inner wall surface of the cylinder body is provided with a plurality of clamping grooves, and the outer side surface of the connecting body is provided with a plurality of protrusions, and the protrusions are clamped in the clamping grooves.

[0014] The nuclear power plant valve hand wheel connecting device can realize the connection between the hand wheel of the nuclear power plant valve and the electric torque wrench, has a relatively simple structure, low manufacturing cost, and an adjustable position of the clamping rod of the clamping mechanism, and has good applicability. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings and embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0016] Figure 1 is one of the structure schematic diagrams of the nuclear power plant valve hand wheel connecting device in some embodiments of the utility model;

[0017] Figure 2 is the second structure schematic diagram of the nuclear power plant valve hand wheel connecting device in some embodiments of the utility model;

[0018] Figure 3 is the partial structure exploded view of the nuclear power plant valve hand wheel connecting device in some embodiments of the utility model;

[0019] Figure 4 is a structural schematic view of a cylinder in some embodiments of the present application;

[0020] Figure 5 is an application schematic view of a nuclear power plant valve hand wheel connecting device in some embodiments of the present application;

[0021] Figure 6 is a structural schematic view of an electric torque wrench. DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and do not indicate that the devices or elements referred to must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0023] It should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly include one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the following description, for the purposes of explanation and not limitation, specific details are set forth, such as particular sequences of steps, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present application with unnecessary detail.

[0025] Referring to Figures 1 to 4 The utility model discloses a nuclear power plant valve hand wheel connecting device, including the connecting barrel 10 for connecting with electric power torque wrench 200, and a plurality of clamping mechanisms 20 are connected with the lower end surface of this connecting barrel 10, and each clamping mechanism 20 includes positioning plate 21, positioning column 22, at least two clamping rods 23 and at least two fasteners 24, one end of positioning plate 21 is connected with the lower end surface of connecting barrel 10, positioning column 22 is movably connected with positioning plate 21, positioning column 22 is spaced along its axial direction and is provided with a plurality of installation through -hole 221 and a plurality of limiting through -hole 222, the installation through -hole 221 is correspondingly communicated with the limiting through -hole 222, at least two clamping rods 23 are passed in installation through -hole 221, and fastener 24 is installed in limiting through -hole 222 to fasten clamping rod 23, so that at least two clamping rods 23 clamp the connecting column 102 (combine with Figure 5 The positioning column 22 is substantially cylindrical, and the clamping rod 23 is substantially cylindrical. The fastener 24 includes, but is not limited to, a fastening bolt, a fastening screw, or a fastening pin.

[0026] The nuclear power plant valve 100 includes, but is not limited to, a nuclear power plant medium valve and a nuclear power plant large valve, such as a nuclear power plant medium gate valve and a nuclear power plant large gate valve.

[0027] The clamping rod 23 can be adjusted in position according to the diameter or height of the connecting column 102, so that the clamping mechanism 20 can be applied to the connection of the hand wheel 101 of the nuclear power plant valve 100 of different sizes.

[0028] Preferably, the number of clamping mechanisms 20 can be four or any other number, which is not limited here.

[0029] In some embodiments, the lower end surface of the connecting barrel 10 is spaced apart and provided with a plurality of grooves 111, and the surface of one end of the positioning plate 21 is provided with a protrusion 211, which is clamped in the groove 111, and the protrusion 211 and the groove 111 are connected by a fixing member 30. The two sides of the protrusion 211 can be recessed structures, so that the protrusion 211 of the positioning plate 21 can be better clamped in the groove 111.

[0030] AsFigure 4 As shown, in some embodiments, the groove width of the groove 111 gradually increases from the center of the connecting cylinder 10 outward. The structural shape of the convex part 211 can be similar to that of the groove 111.

[0031] In combination Figure 3 And Figure 4 As shown, in some embodiments, the inner bottom wall of the groove 111 is provided with a first fixing hole 1111, the convex part 211 is provided with a second fixing hole 2111, and the fixing member 30 connects the first fixing hole 1111 and the second fixing hole 2111. The fixing member 30 includes but is not limited to a fastening screw or a fastening bolt.

[0032] In some embodiments, the positioning plate 21 is provided with a limiting groove 212 extending along the length direction thereof; the upper end of the positioning column 22 is provided with a connecting hole 223; the clamping mechanism 20 further includes a connecting rod 25, the upper end of the connecting rod 25 is provided with an operation handle 26, the outer diameter of the positioning column 22 is greater than the groove width of the limiting groove 212, the positioning column 22 is located at the lower side of the positioning plate 21, the lower end of the connecting rod 25 is inserted into the limiting groove 212 and connected with the connecting hole 223, so that the positioning column 22 can be adjustably fixed on the positioning plate 21, and the operation handle 26 can be a ratchet handle including but not limited to.

[0033] In some embodiments, the connecting cylinder 10 includes a cylinder body 11 and a connecting body 12 arranged in the cylinder body 11, and the connecting body 12 is provided with a connecting groove 121 for connecting with the output connector 201 of the electric torque wrench 200. The structure of the electric torque wrench 200 can be referred to Figure 6 .

[0034] In some embodiments, the output connector 201 of the electric torque wrench 200 can be a substantially square column structure, and the connecting groove 121 is a square column groove.

[0035] In some embodiments, the side wall of the connecting groove 121 is provided with at least one limiting hole, and the nuclear power plant valve handle connecting device further includes at least one limiting member 40, which is inserted into the limiting hole to abut against the output connector 201 of the electric torque wrench 200. The limiting member 40 can be a fastening bolt, a fastening screw or a fastening pin including but not limited to.

[0036] In some embodiments, the inner wall surface of the cylinder body 11 is provided with a plurality of clamping grooves 112, and the outer side surface of the connecting body 12 is provided with a plurality of convex parts 122, which are clamped in the clamping grooves 112. Preferably, the connecting body 12 can include a spherical part and a square part, the spherical part is provided with the convex part 122, and the square part is provided with the connecting groove 121.

[0037] As Figure 3As shown, further, the connecting cylinder 10 can also include a cover 13 which can be fixed on the end face of the opening side of the cylinder body 11 by fastening bolts to fix the spherical body in the cylinder body 11.

[0038] The nuclear power plant valve hand wheel connecting device is applied as follows: when the opening or closing of the nuclear power plant valve 100 is needed, the clamping mechanism 20 of the nuclear power plant valve hand wheel connecting device is fixed opposite to the connecting column 102 of the hand wheel 101 of the nuclear power plant valve 100, the electric torque wrench 200 is connected with the connecting cylinder 10, and then the electric torque wrench 200 is started.

[0039] The nuclear power plant valve hand wheel connecting device can realize the connection of the hand wheel 101 of the nuclear power plant valve 100 and the electric torque wrench 200, has relatively simple structure and low manufacturing cost, and has good applicability because the position of the clamping rod 23 of the clamping mechanism 20 is adjustable.

[0040] It can be understood that the above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which all belong to the protection scope of the present application; therefore, all equivalent transformations and modifications within the scope of the claims of the present application should belong to the scope of the claims of the present application.

Claims

1. A handwheel connection device for a nuclear power plant valve, characterized in that, The device includes a connecting sleeve (10) for connection with an electric torque wrench, and a plurality of clamping mechanisms (20) connected to the lower end face of the connecting sleeve (10). Each clamping mechanism (20) includes a positioning plate (21), a positioning post (22), at least two clamping rods (23), and at least two fasteners (24). One end of the positioning plate (21) is connected to the lower end face of the connecting sleeve (10), and the positioning post (22) is movably connected to the positioning plate (21). The positioning post (22) is provided with a plurality of mounting through holes (221) and a plurality of limiting through holes (222) spaced apart along its axial direction. The mounting through holes (221) and the limiting through holes (222) are correspondingly connected. At least two clamping rods (23) are inserted through the mounting through holes (221). The fasteners (24) are installed in the limiting through holes (222) to fasten the clamping rods (23) so that at least two clamping rods (23) clamp the connecting post of the handwheel of the nuclear power plant valve.

2. The handwheel connection device for nuclear power plant valves according to claim 1, characterized in that, The lower end face of the connecting cylinder (10) is provided with a plurality of grooves (111) spaced apart. The surface of one end of the positioning plate (21) is provided with a protrusion (211). The protrusion (211) is engaged in the groove (111), and the protrusion and the groove (111) are connected by a fastener (30).

3. The handwheel connection device for nuclear power plant valves according to claim 2, characterized in that, The width of the groove (111) gradually increases from the center of the connecting cylinder (10) outwards.

4. The handwheel connection device for nuclear power plant valves according to claim 2, characterized in that, The inner bottom wall of the groove (111) is provided with a first fixing hole (1111), the protrusion (211) is provided with a second fixing hole (2111), and the fastener (30) connects the first fixing hole (1111) and the second fixing hole (2111).

5. The handwheel connection device for nuclear power plant valves according to claim 1, characterized in that, The positioning plate (21) is provided with a limiting groove (212) extending along its length; the upper end of the positioning post (22) is provided with a connecting hole (223); the clamping mechanism (20) also includes a connecting rod (25), the upper end of the connecting rod (25) is provided with an operating handle (26), the outer diameter of the positioning post (22) is larger than the groove width of the limiting groove (212), the positioning post (22) is located on the lower side of the positioning plate (21), and the lower end of the connecting rod (25) passes through the limiting groove (212) and is connected to the connecting hole (223).

6. The handwheel connection device for nuclear power plant valves according to claim 1, characterized in that, The clamping rod (23) is round.

7. The handwheel connection device for nuclear power plant valves according to claim 1, characterized in that, The connecting cylinder (10) includes a cylinder body (11) and a connecting body (12) disposed within the cylinder body (11). The connecting body (12) is provided with a connecting groove (121) for connecting to the output connector of an electric torque wrench.

8. The handwheel connection device for nuclear power plant valves according to claim 7, characterized in that, The connecting groove (121) is a square columnar groove.

9. The handwheel connection device for nuclear power plant valves according to claim 7, characterized in that, The side wall of the connecting groove (121) is provided with at least one limiting hole, and the nuclear power plant valve handwheel connecting device further includes at least one limiting member (40), which passes through the limiting hole to abut against the output connector of the electric torque wrench.

10. The handwheel connection device for nuclear power plant valves according to claim 7, characterized in that, The inner wall of the cylinder (11) is provided with a plurality of slots (112), and the outer side of the connector (12) is provided with a plurality of protrusions (122), which are engaged in the slots (112).

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