Mounting tool for C-shaped sealing ring of reactor pressure vessel

Abstract

The utility model discloses a mounting tool for a C-shaped sealing ring of a reactor pressure vessel, the reactor pressure vessel is provided with a C-shaped sealing ring mounting groove, a C-shaped sealing ring is arranged in the C-shaped sealing ring mounting groove, the C-shaped sealing ring is fixed in the C-shaped sealing ring mounting groove through a plurality of fasteners, each fastener comprises a bottom plate and a C-shaped clamping plate, the bottom plate is provided with a through hole, and the C-shaped clamping plate is provided with a through hole. A plurality of mounting grooves are formed in one side of the C-shaped sealing ring mounting groove, threaded holes are formed in the mounting grooves, fixing bolts are in threaded connection with the interiors of the threaded holes, the mounting tool comprises a handle, a top plate is fixedly connected to the lower surface of one end of the handle, and a movable opening is formed in the handle. When an operator uses the tool, two hands of the operator do not interfere with each other, meanwhile, the function of assisting in fixing the fastener is achieved, installation is greatly facilitated, the installation precision is effectively improved, the operation time is shortened, and the operation efficiency is improved. And meanwhile, the tool is made of nylon, so that the risk of damaging the C-shaped sealing ring and the reactor pressure vessel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of installation tools, and in particular relates to an installation tool for a C-type sealing ring of a reactor pressure vessel. Background Art

[0002] Equipment within nuclear power plants requires regular inspections. The C-type sealing ring is a key component that performs a sealing function in the reactor pressure vessel and needs to be removed, replaced, and maintained during regular equipment inspections. The installation of the C-type sealing ring during maintenance is related to the sealing of the reactor pressure vessel and is a critical step. The C-type sealing ring is generally fixed in the C-type sealing ring mounting groove by fasteners. During this process, the fasteners need to be fixed to the C-type sealing ring while the bolts are tightened. Due to limited working space, high installation quality requirements are required. In the past, the fasteners of the C-type sealing ring could only be tightened with a flat-blade screwdriver and an internal hexagon socket. The two sets of tools interfered with each other during installation, making installation extremely difficult. The flat-blade screwdriver could easily damage the sealing surface of the C-type sealing ring, placing heavy demands on the workers. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: a C-type sealing ring installation tool for a reactor pressure vessel, the reactor pressure vessel is provided with a C-type sealing ring installation groove, the C-type sealing ring is provided in the C-type sealing ring installation groove, the C-type sealing ring is fixed in the C-type sealing ring installation groove by a number of fasteners, the fastener includes a base plate and a C-shaped clamping plate, one end of the base plate is fixedly connected to the lower end of the C-shaped clamping plate, a through hole is provided on the base plate, a number of installation grooves are provided on one side of the C-type sealing ring installation groove, the installation grooves correspond to the fasteners one by one, a threaded hole is provided in the installation groove, a fixing bolt is threadedly connected to the threaded hole, the upper end of the fixing bolt is provided with a nut with an inner hexagonal groove, the lower end of the fixing bolt passes through the through hole on the corresponding fastener base plate and extends into the threaded hole, the installation tool includes a handle, the lower surface of one end of the handle is fixedly connected to the top plate, and the handle is provided with a movable opening.

[0004] As a preferred embodiment of the above technical solution, the top plate is provided with a push curved surface, which matches the C-shaped clamping plate.

[0005] As a preferred embodiment of the above technical solution, a positioning hole is provided on the C-shaped clamping plate, and a positioning protrusion is provided on the pushing curved surface.

[0006] As a preferred embodiment of the above technical solution, the base plate and the C-shaped card plate are integrally formed of metal material.

[0007] As a preferred embodiment of the above technical solution, the handle and the top plate are integrally formed of plastic.

[0008] The beneficial effects of the present invention are as follows: the tool for installing a C-type sealing ring for a reactor pressure vessel allows the operator to use the tool without interfering with each other's hands while simultaneously assisting in securing the fasteners, greatly facilitating installation, effectively improving installation accuracy, and reducing work time and increasing efficiency. Furthermore, the tool is made of nylon, reducing the risk of damage to the C-type sealing ring and the reactor pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0011] Figure 3 It is a structural diagram of the fastener;

[0012] Figure 4 It is a structural diagram of the installation tool. DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1-4As shown, a tool for installing a C-type sealing ring 2 of a reactor pressure vessel 3 is provided. The reactor pressure vessel 3 is provided with a C-type sealing ring mounting groove 1, and a C-type sealing ring 2 is provided in the C-type sealing ring mounting groove 1. The C-type sealing ring 2 is fixed in the C-type sealing ring mounting groove 1 by a number of fasteners. The fastener includes a base plate 4 and a C-shaped clamping plate 5. One end of the base plate 4 is fixedly connected to the lower end of the C-shaped clamping plate 5. A through hole 6 is provided on the base plate 4. A number of mounting grooves 7 are provided on one side of the C-type sealing ring mounting groove 1. The mounting grooves 7 correspond one to one with the fasteners. A threaded hole 8 is provided in the mounting groove 7. A fixing bolt 9 is threadedly connected to the threaded hole 8. The upper end of the fixing bolt 9 is provided with a nut 11 with an inner hexagonal groove 10. The lower end of the fixing bolt 9 passes through the through hole 6 on the corresponding fastener base plate 4 and extends into the threaded hole 8. The installation tool includes a handle 12. The lower surface of one end of the handle 12 is fixedly connected to a top plate 13, and the handle 12 is provided with a movable opening 14. When in use, first place the C-shaped sealing ring 2 into the C-shaped sealing ring mounting groove 1, and then place the fasteners into the corresponding mounting grooves 7 respectively. The bottom plate 4 fits with the bottom of the mounting groove 7. At this time, the through hole 6 and the threaded hole 8 cannot be aligned. Insert the top plate 13 into the mounting groove 7, and use force to make the top plate 13 press against the C-shaped card plate 5 so that the C-shaped card plate 5 is attached to the C-shaped sealing ring 2, and the through hole 6 and the threaded hole 8 are aligned. Pass the fixing bolt 9 through the through hole 6, use an inner hexagonal screwdriver to pass through the movable opening 14 and insert it into the inner hexagonal slot, turn the fixing bolt 9, and screw the fixing bolt 9 into the threaded hole 8 to complete the fastener fixation. After the fastener is fixed, remove the installation tool.

[0017] Furthermore, the top plate 13 is provided with a push curved surface 15, which matches the C-shaped clamping plate 5. The push curved surface 15 contacts the C-shaped clamping plate 5, pushing it toward the C-shaped sealing ring 2, and then tightening the fixing bolts 9, so that the C-shaped clamping plate 5 can fix the C-shaped sealing ring 2 and prevent it from being separated from the C-shaped sealing ring installation groove 1, ensuring that the sealing function can always be exerted after installation and during long-term use.

[0018] Furthermore, the C-shaped card plate 5 is provided with a positioning opening 16, and the pushing curved surface 15 is provided with a positioning protrusion 17. After the top plate 13 is inserted into the mounting slot 7, it is moved toward the C-shaped card plate 5 so that the positioning protrusion 17 is inserted into the positioning opening 16, and then the C-shaped card plate 5 is firmly pressed. In this way, the pushing curved surface 15 of the top plate 13 can fit closely with the C-shaped card plate 5, so that the force applied to the C-shaped card plate 5 is more even.

[0019] Furthermore, the bottom plate 4 and the C-shaped clamping plate 5 are integrally formed of a metal material, which may be copper, stainless steel or other alloy materials.

[0020] Furthermore, the handle 12 and the top plate 13 are integrally formed of plastic. The plastic is preferably made of nylon. The plastic will not scratch or wear the reactor pressure vessel 3, ensuring the smoothness of the end surface of the reactor pressure vessel 3.

[0021] It is worth mentioning that the technical features such as plastics and metal materials involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional means in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0022] The above describes in detail the preferred specific embodiments of the present invention. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. A tool for installing C-type sealing rings for reactor pressure vessels, characterized in that: The reactor pressure vessel is provided with a C-shaped sealing ring mounting groove, a C-shaped sealing ring is provided in the C-shaped sealing ring mounting groove, and the C-shaped sealing ring is fixed in the C-shaped sealing ring mounting groove by a number of fasteners, and the fastener includes a base plate and a C-shaped clamping plate, one end of the base plate is fixedly connected to the lower end of the C-shaped clamping plate, a through hole is provided on the base plate, and a number of mounting grooves are provided on one side of the C-shaped sealing ring mounting groove, and the mounting grooves correspond to the fasteners one by one, a threaded hole is provided in the mounting groove, and a fixing bolt is threadedly connected to the threaded hole, and a nut with an inner hexagonal groove is provided at the upper end of the fixing bolt, and the lower end of the fixing bolt passes through the through hole on the corresponding fastener base plate and extends into the threaded hole, and the installation tool includes a handle, the lower surface of one end of the handle is fixedly connected to the top plate, and the handle is provided with a movable opening.

2. The C-type sealing ring installation tool for a reactor pressure vessel according to claim 1, characterized in that: The top plate is provided with a push curved surface, which matches the C-shaped clamping plate.

3. The C-type sealing ring installation tool for a reactor pressure vessel according to claim 2, characterized in that: The C-shaped clamping plate is provided with a positioning opening, and the pushing curved surface is provided with a positioning protrusion.

4. The C-type sealing ring installation tool for a reactor pressure vessel according to claim 1, characterized in that: The bottom plate and the C-shaped clamping plate are integrally formed from metal material.

5. The C-type sealing ring installation tool for a reactor pressure vessel according to claim 1, characterized in that: The handle and the top plate are integrally formed of plastic.

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