A clamping and fixing tool for disassembling and assembling a speed sensor

Abstract

This utility model relates to a clamping and fixing tool for disassembling and assembling a speed sensor. The clamping and fixing tool is used for positioning and clamping the speed sensor. The tool includes a first support rod, a second support rod, and a handle. The handle is fixed to the top of the first support rod. The top of the second support rod is telescopically connected to the bottom of the first support rod. When the clamping and fixing tool is in use, the bottom of the second support rod is connected to the speed sensor. Compared with the prior art, the clamping and fixing tool of this utility model can be applied to the positioning and clamping of sensors in narrow, confined spaces, and provides reliable support for the operation of this type of equipment, thereby improving work efficiency and avoiding quality risks caused by tool unreliability.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant maintenance, and in particular to a clamping and fixing tool for disassembling and assembling speed sensors. Background Technology

[0002] In the routine maintenance and overhaul of nuclear power equipment, speed sensors, as key components for monitoring the operating status of rotating equipment, are crucial to the safe and stable operation of the unit, and the accuracy and reliability of their installation and disassembly directly affect this. Currently, speed sensors are typically installed inside sleeve supports, resulting in a compact structure and limited space, which makes operation particularly difficult, especially in confined environments such as the nuclear island. Existing technology lacks specialized clamping and fixing tools for this type of sensor, forcing maintenance personnel to rely on general-purpose tools or makeshift auxiliary fixtures for disassembly and assembly, which presents numerous drawbacks.

[0003] In practice, because one end of the sensor cannot be effectively secured, the sensor body can easily rotate when tightening or loosening the locking nut with a wrench. This not only causes the coaxial cable to twist and be damaged, but may also affect the installation quality due to thread damage. More seriously, if the sensor is not properly secured, it is prone to displacement under the vibration of the unit, leading to fluctuations in the speed signal or even measurement failure. In extreme cases, it may even cause friction between the sensor and rotating parts, resulting in equipment damage. In addition, the use of general-purpose tools also poses risks such as tool slippage and the introduction of foreign objects, which does not meet the management requirements for foreign object and fall prevention in nuclear power plants.

[0004] Although some clamping tools exist on the market, most are designed for general scenarios and cannot meet the specific requirements of the narrow, confined, and highly reliable environment of nuclear power plants. Therefore, developing a dedicated clamping and fixing tool with a reasonable structure, convenient operation, and high reliability has become an urgent need in the field of nuclear power plant maintenance. Utility Model Content

[0005] The purpose of this invention is to address the problem in existing technologies where there is no clamping tool for fixing speed sensors installed inside sleeve brackets. This invention provides a clamping and fixing tool for the installation and removal of speed sensors. This clamping and fixing tool can be used for positioning and clamping sensors in narrow, enclosed spaces, and provides reliable support for the operation of this type of equipment, thereby improving work efficiency and avoiding quality risks caused by unreliable tools.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A clamping and fixing tool for disassembling and assembling a speed sensor is disclosed. The clamping and fixing tool is used for positioning and clamping the speed sensor. The tool includes a first support rod, a second support rod, and a handle.

[0008] The handle is fixed to the top of the first support rod, and the top of the second support rod is telescopically connected to the bottom of the first support rod.

[0009] When the clamping and fixing tool is used, the bottom end of the second support rod is connected to the speed sensor.

[0010] In one embodiment of this utility model, the speed sensor is provided with a support sleeve.

[0011] In one embodiment of this utility model, the support sleeve has a hollow structure inside.

[0012] When the clamping and fixing tool is used, the handle is located above the support sleeve, and the lower end of the first support rod and the second support rod are located inside the support sleeve.

[0013] In one embodiment of this utility model, the clamping and fixing tool further includes a conversion head, which is fixed to the bottom of the second support rod.

[0014] When the clamping and fixing tool is in use, the conversion head is connected to the speed sensor.

[0015] In one embodiment of this utility model, the conversion head is welded to the bottom of the second support rod.

[0016] In one embodiment of this utility model, the cross-sectional shape of the conversion head is an inverted "U" shape, and the cross-sectional shape of the top end face of the speed sensor is a regular "U" shape.

[0017] As a preferred technical solution, the size of the conversion head is matched with that of the speed sensor end face.

[0018] In one embodiment of this utility model, the first support rod, the second support rod, the handle, and the adapter are provided with a through channel for the sensor cable to pass through.

[0019] In one embodiment of this utility model, the first support rod, the second support rod, the handle, and the adapter are made of stainless steel.

[0020] In one embodiment of this utility model, the first support rod, the second support rod, and the handle have circular cross-sectional shapes.

[0021] The diameter of the first support rod and handle is 15-30 mm.

[0022] As a preferred technical solution, the diameter of the second support rod is slightly smaller than that of the first support rod.

[0023] In one embodiment of this utility model, the cross-sectional shape of the clamping and fixing tool is "T".

[0024] As a preferred technical solution, one end of the handle is provided with an "O"-shaped anti-loosening interface.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This utility model combines the speed sensor installed inside the sleeve bracket with the cooperative installation method between the sleeve bracket and the sleeve bracket. The clamping and fixing tool provided is adjustable in length and can be inserted into the sleeve bracket to position and clamp one end of the speed sensor, thereby effectively fixing the speed sensor. When the sensor is positioned and locked, the sensor body does not rotate synchronously when the locking nut is turned with a wrench.

[0027] 2. The clamping and fixing tool provided by this utility model is made of stainless steel, which has excellent mechanical properties. It will not rust or cause environmental pollution during long-term use and storage, and at the same time meets the safety and environmental protection management requirements of nuclear power plants.

[0028] 3. The clamping and fixing tool provided by this utility model uses the handle and the concentric support rod together. The conversion head can clamp and position the speed sensor. At the same time, the coaxial cable can also avoid rotation and twisting, which effectively solves the problem of sensor body and coaxial cable twisting during the clamping and positioning process in the existing process.

[0029] 4. The integrated design of the clamping and fixing tool provided by this utility model enables the tool to be applied to the positioning and clamping of various types of speed sensors, realizing the rapid positioning, connection and disassembly of the locking nut of the sensor inside the sleeve with different diameters, which greatly improves the flexibility and efficiency of maintenance work.

[0030] 5. The clamping and fixing tool provided by this utility model has a simple structure, is easy and quick to operate, and is convenient for positioning and installation. With a simple introduction, the sensor disassembly and assembly personnel can quickly master the usage method. The innovation points are compact structure, wide range of material selection, simple structure and convenient operation.

[0031] 6. The clamping and fixing tool provided by this utility model has high stability, eliminating the risk of accidental collision and equipment damage, and avoiding the risk of personnel being injured by the sensor body or cables being twisted during on-site verification. The development of this tool will provide reliable support for the operation of this type of equipment, thereby improving work efficiency and avoiding quality hazards caused by equipment unreliability.

[0032] 7. The clamping and fixing tool provided by this utility model has anti-loosening fixing technology. By adding an "O"-shaped anti-loosening interface design, it can be locked with a special anti-fall rope hook before use, which effectively reduces the risk of the tool slipping and loosening due to the lack of a loosening interface, and reduces the risk of the tool falling. In addition, the anti-loosening interface reduces the risk of foreign objects entering the equipment system, ensuring the safety of the maintenance process, and meeting the safety requirements of nuclear power plants for preventing foreign objects and falling objects. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the clamping and fixing tool in this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the clamping and fixing tool used in conjunction with the speed sensor in this utility model;

[0035] Explanation of the attached figures: 1. Clamping and fixing tool; 2. First support rod; 3. Second support rod; 4. Handle; 5. Adapter head; 6. Channel; 7. Support sleeve; 8. Speed ​​sensor; 9. Sensor cable; 10. Wrench; 11. Locking nut; 12. Interface. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Example 1

[0042] See Figures 1 to 2 This embodiment provides a clamping and fixing tool for disassembling and assembling a speed sensor. The clamping and fixing tool 1 is used for positioning and clamping the speed sensor 8. The clamping and fixing tool 1 includes a first support rod 2, a second support rod 3, and a handle 4.

[0043] The handle 4 is fixed to the top of the first support rod 2, and the top of the second support rod 3 is telescopically connected to the bottom of the first support rod 2.

[0044] When the clamping and fixing tool 1 is used, the bottom end of the second support rod 3 is connected to the speed sensor 8.

[0045] In this embodiment, the speed sensor 8 is provided with a support sleeve 7.

[0046] In this embodiment, the support sleeve 7 has a hollow internal structure.

[0047] When the clamping and fixing tool 1 is used, the handle 4 is located above the support sleeve 7, and the lower end of the first support rod 2 and the second support rod 3 are located inside the support sleeve 7.

[0048] In this embodiment, the clamping and fixing tool 1 further includes a conversion head 5, which is fixed to the bottom of the second support rod 3.

[0049] When the clamping and fixing tool 1 is used, the conversion head 5 is connected to the speed sensor 8.

[0050] In this embodiment, the conversion head 5 is welded to the bottom of the second support rod 3.

[0051] In this embodiment, the cross-sectional shape of the converter head 5 is an inverted "U" shape, and the cross-sectional shape of the top end face of the speed sensor 8 is a regular "U" shape.

[0052] In this embodiment, the size of the converter head 5 is matched with that of the end face of the speed sensor 8.

[0053] In this embodiment, the first support rod 2, the second support rod 3, the handle 4 and the adapter 5 are provided with a through channel 6, which is used to pass through the sensor cable 9.

[0054] In this embodiment, the first support rod 2, the second support rod 3, the handle 4, and the adapter 5 are made of stainless steel.

[0055] In this embodiment, the first support rod 2, the second support rod 3, and the handle 4 have circular cross-sectional shapes.

[0056] The diameter of the first support rod 2 and the handle 4 is 15-30 mm.

[0057] In this embodiment, the diameter of the second support rod 3 is slightly smaller than that of the first support rod 2.

[0058] In this embodiment, the clamping and fixing tool 1 has a "T" shaped cross-section.

[0059] In this embodiment, one end of the handle is provided with an "O"-shaped anti-loosening interface 12.

[0060] This embodiment provides a method for preparing a clamping and fixing tool for disassembling and assembling a speed sensor. The specific steps are as follows:

[0061] The clamping and fixing tool 1 is made of stainless steel with a diameter of φ20mm as the base material. It is made by welding a conversion head 5 that matches the end face size of the speed sensor 8. The first support rod 2 and the second support rod 3 are made of stainless steel pipes designed to be telescopic according to their length. Two sections of stainless steel pipes are welded to both sides of the first support rod 2 to form a handle 4. The overall structure of the clamping and fixing tool 1 is T-shaped.

[0062] During operation, the clamping and fixing tool 1 leads the sensor cable 9 out through the channel 6, and then the clamping and fixing tool 1 enters the support sleeve 7 and is positioned and fixed by the conversion head 5 and the end face of the speed sensor 8. After the speed sensor 8 is engaged with the clamping and fixing tool 1, tighten the handle 4 to complete the clamping and fixing of the sensor.

[0063] In addition, this embodiment also provides a method for using a clamping and fixing tool for disassembling and assembling a speed sensor, the specific steps of which are as follows:

[0064] S1. Select a matching clamping and fixing tool 1 according to the size of the positioning groove of the speed sensor 8, and open the sealing end cover on the support sleeve 7 of the speed sensor 8.

[0065] S2. Disconnect the speed sensor 8 from the amplifier aviation plug cable, and introduce the sensor cable 9 through the first support rod 2 and the second support rod 3 via one end of the clamping and fixing tool 1.

[0066] S3. Place the first support rod 2 and the second support rod 3 into the support sleeve 7, and adjust the angle of the clamping and fixing tool 1 to ensure that the converter head 5 and the end face of the speed sensor 8 are properly engaged.

[0067] S4. Hold the handle 4 and fix the speed sensor 8 to confirm that it is not rotating. Then use the wrench 10 to tighten the locking nut 11 of the speed sensor 8 to complete the fastening installation.

[0068] S5. After the operation is completed, remove the clamping and fixing tool 1.

[0069] Example 2

[0070] Based on feedback from multiple actual operations during routine and major overhauls of a nuclear power plant's nuclear island, the clamping and fixing tool 1 has been able to establish a standardized operating procedure, ensuring its reliability in actual operation. This standardizes the behavior of maintenance personnel, reduces equipment failure rates, and eliminates the risk of equipment damage and personal injury due to unsuitable tools when entering the site. It meets the operational reliability verification requirements for positioning, clamping, and fixing equipment in confined spaces during nuclear power plant maintenance.

[0071] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A clamping and fixing tool for disassembling and assembling a speed sensor, characterized in that, The clamping and fixing tool (1) is used for positioning and clamping the speed sensor (8). The clamping and fixing tool (1) includes a first support rod (2), a second support rod (3), and a handle (4). The handle (4) is fixed to the top of the first support rod (2), and the top of the second support rod (3) is telescopically connected to the bottom of the first support rod (2). When the clamping and fixing tool (1) is used, the bottom end of the second support rod (3) is connected to the speed sensor (8).

2. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 1, characterized in that, The speed sensor (8) is provided with a support sleeve (7).

3. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 2, characterized in that, The support sleeve (7) has a hollow structure inside. When the clamping and fixing tool (1) is used, the handle (4) is located above the support sleeve (7), and the lower end of the first support rod (2) and the second support rod (3) are located inside the support sleeve (7).

4. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 1, characterized in that, The clamping and fixing tool (1) also includes a conversion head (5), which is fixed to the bottom of the second support rod (3). When the clamping and fixing tool (1) is used, the conversion head (5) is connected to the speed sensor (8).

5. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 4, characterized in that, The conversion head (5) is welded to the bottom of the second support rod (3).

6. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 4, characterized in that, The cross-sectional shape of the converter head (5) is an inverted "U" shape, and the cross-sectional shape of the top end face of the speed sensor (8) is a regular "U" shape.

7. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 4, characterized in that, The first support rod (2), the second support rod (3), the handle (4) and the adapter (5) are provided with through channels (6) for passing through the sensor cable (9).

8. The clamping and fixing tool for disassembling and assembling a speed sensor according to claim 4, characterized in that, The first support rod (2), the second support rod (3), the handle (4), and the adapter (5) are made of stainless steel.

9. A clamping and fixing tool for disassembling and assembling a speed sensor according to claim 1, characterized in that, The first support rod (2), the second support rod (3), and the handle (4) have circular cross-sectional shapes. The diameter of the first support rod (2) and the handle (4) is 15-30 mm.

10. A clamping and fixing tool for disassembling and assembling a speed sensor according to claim 1, characterized in that, The clamping and fixing tool (1) has a "T" shaped cross section.

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