Pipe orifice torque applying device
By designing a torque application device for the nozzle, and utilizing elastic gaskets and bolt connections, the problem of applying torque to the threaded connections of the guide shield and extension section in nuclear power reactors was solved, achieving precise installation results and ensuring the reliability and accuracy of the installation.
Patent Information
- Application Number
- CN202423200180.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In nuclear power reactors, the threaded connections of the guide shield and extension section are difficult to apply torque using conventional methods due to limited construction space, making it difficult to meet the installation accuracy and position requirements.
A pipe torque application device was designed, including a first pipe clamp, a second pipe clamp, a force guide plate, and a torque wrench. It utilizes elastic pads and bolt connections to ensure accurate torque transmission and installation precision.
It enables precise torque application to the guide cover and extension section in confined spaces, protecting the nozzle from damage and improving installation accuracy and efficiency.
Smart Images
Figure CN223656900U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nuclear power equipment field especially, and relates to a pipe orifice torque exerting device. BACKGROUND
[0002] The statements here only provide the background of the utility model related, and do not necessarily constitute the prior art.
[0003] In nuclear power reactor, the main function of guide cover is to provide guide and constraint for the movement of control rod, facilitate the lifting and lowering of control rod, generally funnel-shaped, the funnel pipe part is longer, can use tool to hold;Extension section as the extension part of hook claw shell assembly in reactor vessel top cover, ensure that the end of control rod drive mechanism is flush, the structure is circular tube shape, the outer diameter is larger, up to φ102mm. Because the construction space is limited and facilitates the equipment maintenance of later period, the threaded connection is used between the extension pipe and the penetrating part of hook claw shell assembly, the threaded connection is used between the extension pipe and guide cover.
[0004] Guide cover and extension section as the key equipment device in nuclear reactor, connect the lower end of hook claw shell assembly on the top cover of nuclear power reactor vessel, facilitate the lifting and lowering of control rod, thereby realize the reaction speed of controlling reactor. Its installation precision and installation position have higher requirements.
[0005] Guide cover and extension section adopt threaded connection, but because the space in reactor vessel top cover is narrow, the quantity of guide cover and extension section is more, cannot adopt conventional method to exert torque, and the connection and installation of guide cover and extension section have higher difficulty. UTILITY MODEL CONTENTS
[0006] In view of the deficiencies of prior art, the utility model aims at providing a pipe orifice torque exerting device, under the condition of protecting guide cover and extension section from external damage and scratching and guaranteeing cleanliness, guaranteeing that guide cover and extension section can exert sufficient torque to reach the meshing requirement of thread. It can also be applied to similar pipe orifice threaded tightening and torque exerting places.
[0007] In order to realize the above-mentioned purpose, the utility model is realized through the following technical scheme:
[0008] A pipe orifice torque exerting device, comprising first pipe clamp, second pipe clamp, guide plate and torque wrench, wherein,
[0009] The first pipe clamp and the second pipe clamp are oppositely arranged and form a pipe body accommodating cavity;The first pipe clamp and the second pipe clamp are detachably connected through bolts;
[0010] The inner wall of the first pipe clamp and the second pipe clamp is provided with elastic gasket;
[0011] One end of the guide plate is connected to the outer wall of the first pipe clamp, and the other end extends radially outward, and the end is connected with the torque wrench;
[0012] The torque wrench is perpendicular to the axis of the pipe body accommodating cavity, and is perpendicular to the radial direction of the pipe clamp.
[0013] The inner walls of the first pipe clamp and the second pipe clamp are provided with elastic pads, which can effectively increase the static friction force applied to the pipe opening, and further ensure the smooth rotation of the pipe opening during the rotation of the pipe opening. At the same time, the elastic pad can play a good buffering role, and can protect the to-be-connected pipe opening, preventing the pipe opening from being damaged and deformed.
[0014] Since the installation precision of the guide cover and the extension section is relatively high, the torque applied by the torque applying device needs to be accurately controlled during installation.
[0015] The setting mode of the torque wrench of the utility model makes the torque applied to the end of the wrench equal to the torque finally transmitted to the pipe opening, and then the torque applied to the end of the wrench can be accurately controlled to accurately control the torque applied to the pipe opening, thereby effectively improving the installation precision.
[0016] In some embodiments, the inner walls of the first pipe clamp and the second pipe clamp are provided with groove assemblies, the elastic pads are provided with protrusion assemblies, the elastic pads are installed on the first pipe clamp and the second pipe clamp through the cooperation of the groove assemblies and the protrusion assemblies, and the pipe clamp and the elastic pad are bonded through a strong glue layer.
[0017] Since the elastic pad will also be worn out during use, the elastic pad can be conveniently replaced after being damaged by using this mode.
[0018] Preferably, the elastic pad is a rubber pad.
[0019] In some embodiments, the first pipe clamp and the second pipe clamp are symmetrically provided with through holes on both sides, and the first pipe clamp and the second pipe clamp are detachably connected through bolts on both sides.
[0020] In some embodiments, the guide plate is perpendicular to the axis of the pipe body accommodating cavity.
[0021] Preferably, the width of the connecting end of the guide plate and the first pipe clamp is greater than the width of the connecting end and the torque wrench.
[0022] Further preferably, the width of the guide plate decreases from the first pipe clamp to the torque wrench.
[0023] In some embodiments, the guide plate and the torque wrench are connected through bolts.
[0024] Preferably, the end of the torque wrench is provided with a holding part.
[0025] Further preferably, the holding part is sleeved with a rubber sleeve.
[0026] The beneficial effects achieved by one or more embodiments of the present utility model are as follows:
[0027] The torque applying device of the present utility model, the first pipe clamp and the second pipe clamp are arranged around the pipe opening to be connected, and then the first pipe clamp and the second pipe clamp are connected by bolts, which can effectively clamp the pipe opening to which torque is applied, effectively solving the problem that the torque wrench cannot act on the pipe opening.
[0028] The torque wrench is arranged in such a manner that the torque applied to the end of the wrench is equal to the torque finally transmitted to the pipe opening, and thus the torque applied to the end of the wrench can be accurately controlled to accurately control the torque applied to the pipe opening, thereby effectively improving the installation accuracy.
[0029] The torque applying device can be quickly installed and disassembled. BRIEF DESCRIPTION OF DRAWINGS
[0030] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model, and the schematic embodiments of the present utility model and the description thereof are used to explain the present utility model and do not constitute an improper limitation on the present utility model.
[0031] Figure 1 is a front view structural schematic diagram of the torque applying device of the present utility model;
[0032] Figure 2 is a side view structural schematic diagram of the torque applying device of the present utility model;
[0033] Figure 3 is a schematic diagram of the placement position of the torque wrench of the present utility model.
[0034] In the figure: 1. second pipe clamp; 2. bolt; 3. fixing nut; 4. rubber gasket; 5. force guide plate; 6. hexagonal flange nut; 7. torque wrench. DETAILED DESCRIPTION
[0035] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as generally understood by those skilled in the art to which the present utility model belongs.
[0036] The present utility model will be further described below in combination with embodiments and drawings.
[0037] As Figures 1-3As shown in the embodiment, the pipe mouth torque applying device is described below in combination with specific drawings.
[0038] As shown in the embodiment, the torque applying device comprises a first pipe clamp, a second pipe clamp 1, a bolt 2, a fixing nut 3, a rubber gasket 4, a force guide plate 5, a hexagonal flange nut 6. Figure 1 The first pipe clamp and the second pipe clamp 1 are oppositely arranged to form a pipe body accommodating cavity; the first pipe clamp and the second pipe clamp 1 are detachably connected through the bolt 2, and a gasket is sleeved on the bolt 2 to achieve firm fixing; the inner walls of the first pipe clamp and the second pipe clamp 1 are provided with elastic gaskets; one end of the force guide plate 5 is connected to the outer wall of the first pipe clamp, and the other end extends radially outward, and the end is connected with the torque wrench 7; the torque wrench 7 is perpendicular to the axis of the pipe body accommodating cavity, and is perpendicular to the radial direction of the pipe clamp.
[0039] The inner walls of the first pipe clamp and the second pipe clamp 1 are provided with groove assemblies, and the elastic gaskets are provided with protrusion assemblies; the elastic gaskets are installed on the first pipe clamp and the second pipe clamp through the cooperation of the groove assemblies and the protrusion assemblies. The elastic gasket is a rubber gasket 4. The protrusions on the elastic gasket are interference-fitted with the grooves in the inner wall of the pipe clamp to achieve fixation of the elastic gasket, and the pipe clamp and the elastic gasket are enhanced in bonding through a strong glue layer.
[0040] Both sides of the first pipe clamp and the second pipe clamp 1 are symmetrically provided with through holes, and the two sides of the first pipe clamp and the second pipe clamp 1 are detachably connected through bolts.
[0041] The force guide plate 5 is perpendicular to the axis of the pipe body accommodating cavity; the width of the force guide plate 5 decreases successively from the first pipe clamp to the torque wrench.
[0042] The force guide plate 5 is connected with the torque wrench 7 through bolts, and is fixed by the hexagonal flange nut 6; the end of the torque wrench 7 is provided with a holding part, and the holding part is sleeved with a rubber sleeve.
[0043] The specific use method of the device is as follows:
[0044] 1) Hold the guide cover or the extension section and screw it into the pipe connection position, and assemble the rubber gasket (the rubber gasket 4) with the pipe clamp.
[0045] Figure 1 2) Wrap the pipe clamp with the rubber gasket with the guide cover or the extension section, and fix it with the bolt, the gasket and the fixing nut.
[0046] 3) Check the fit of the rubber gasket, and determine whether the pipe clamp is effectively clamped on the guide cover or the extension section.
[0047] 3) Check the fit of the rubber gasket, and determine whether the pipe clamp is effectively clamped on the guide cover or the extension section.
[0048] 4) Set the torque wrench to apply torque, use the torque wrench to connect the hex flange nut on the guide plate, ensure that the torque wrench is perpendicular to the center line of the guide plate.
[0049] 5) Hold the torque wrench and apply a force perpendicular to the torque wrench, the torque wrench drives the torque applying device to apply torque to the guide cover or extension section.
[0050] 6) After the torque is applied, disassemble the device and store it in the designated location.
[0051] Finally, it should be noted that the relational terms such as first and second and the like can only be used to distinguish one entity or action from another, without necessarily requiring or implying that these entities or actions are in any way mutually exclusive or directional.
[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A pipe end torque applying device, characterized by: The utility model relates to a torque wrench, which comprises a first pipe clamp, a second pipe clamp, a force guide plate and a torque wrench. The first pipe clamp and the second pipe clamp are oppositely arranged to form a pipe body accommodating cavity. The inner walls of the first pipe clamp and the second pipe clamp are provided with elastic gaskets. One end of the force guide plate is connected to the outer wall of the first pipe clamp, and the other end extends radially outward, and the end is connected to the torque wrench. The torque wrench is perpendicular to the axis of the pipe body accommodating cavity and perpendicular to the radial direction of the pipe clamp.
2. A nipple torque applying device according to claim 1, characterised in that: The inner walls of the first pipe clamp and the second pipe clamp are provided with groove assemblies, and the elastic gaskets are provided with protrusion assemblies.
3. A nipple torque applying device according to claim 2, characterised in that: The elastic gaskets are rubber gaskets.
4. The nipple torque applying device of claim 1, wherein: Both sides of the first pipe clamp and the second pipe clamp are symmetrically provided with through holes, and the two sides are detachably connected by bolts.
5. The nipple torque applying device of claim 1, wherein: The force guide plate is perpendicular to the axis of the pipe body accommodating cavity.
6. A nipple torque applying device according to claim 5, characterised in that: The width of the connection end of the force guide plate to the first pipe clamp is greater than the width of the connection end to the torque wrench.
7. A nipple torque applying device according to claim 6, characterised in that: The width of the force guide plate decreases from the first pipe clamp to the torque wrench.
8. The nipple torque applying device of claim 1, wherein: The force guide plate and the torque wrench are connected by bolts.
9. A nipple torque applying device according to claim 8, characterised in that: The end of the torque wrench is provided with a holding part.
10. A nipple torque applying device according to claim 9, characterised in that: The holding part is provided with a rubber sleeve.