Nuclear power station reactor thermocouple joint dismounting tool

Abstract

The utility model discloses a nuclear power station reactor thermocouple joint dismounting tool, relates to the field of reactor dismounting tools, and is used for solving the problems of low convenience and reliability when a conventional general tool is used for dismounting a cable joint of a thermocouple detector. The disassembling and assembling tool comprises an L-shaped bent folding rod, one end of the L-shaped bent folding rod is provided with a handheld end used for being held by hand, the lower portion of the handheld end is provided with an anti-skid grab handle, the bottom of the handheld end of the folding rod is provided with a mounting hole, the other end of the folding rod is a clamping end, and the clamping end is provided with a wrench head connected to the clamping end through a steering shaft. According to the tool, through the structural design, on one hand, a more convenient force application method is provided for workers in the disassembly and assembly work, and the operation is more labor-saving; and on the other hand, the force application direction when the cable joint is disassembled and assembled is unified, and the convenience and reliability of disassembly and assembly are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of reactor disassembly and assembly tools, specifically relating to a tool for disassembling and assembling thermocouple connectors in nuclear power plant reactors. Background Technology

[0002] The reactor core measurement system provides data on core neutron flux distribution, reactor fuel assembly cooling water outlet temperature, and reactor pressure vessel water level. The temperature measurement system provides fuel assembly outlet and upper head chamber temperatures, and calculates saturation temperature and subcooling margin after verifying primary side pressure. While not directly responsible for safety functions, the temperature measurement system is a post-accident monitoring system. However, in the event of an accident, it ensures continuous temperature measurement, allowing operators to monitor core temperature and subcooling trends both during and after the accident.

[0003] Thermocouple detectors are used to measure temperature. Thirty-eight thermocouples measure the temperature at the fuel assembly outlet, and two detectors measure the temperature at the top of the pressure vessel. These signals are then led out of the pressure vessel from four terminals at the top. The cables run along cable trays to a connection plate. From the connection plate, the signals are led through electrical penetrations to two temperature measurement cabinets outside the containment.

[0004] During major or minor refueling overhauls of nuclear power units, the disassembly and assembly of thermocouple detector cable joints within the reactor reactor is extremely inconvenient due to the dense distribution of joints and limited space. Using existing general-purpose tools is highly impractical. Furthermore, the cable joints contain ceramic protection and tiny pins; using existing tools for disassembly and assembly, especially if the direction of force is inaccurate, can damage the cable joints and cause unnecessary equipment wear and tear. Utility Model Content

[0005] The purpose of this utility model is to provide a tool for disassembling and assembling thermocouple connectors in nuclear power plant reactors, which solves the problem of low convenience and reliability when using existing general-purpose tools to disassemble and assemble thermocouple detector cable connectors.

[0006] This utility model discloses a tool for disassembling and assembling thermocouple connectors in nuclear power plant reactors. The tool includes: an L-shaped bent lever with a handheld end for holding at one end. The lower part of the handheld end is provided with a non-slip grip. An mounting hole is provided at the bottom of the handheld end of the lever. The other end of the lever is a clamping end, and a wrench head is provided at the clamping end via a steering shaft.

[0007] The aforementioned tool for disassembling and assembling thermocouple connectors in a nuclear power plant reactor includes a non-slip handle that can be used in conjunction with on-site non-slip gloves.

[0008] The above-mentioned tool for disassembling and assembling a nuclear power plant reactor thermocouple connector can be combined with other wrenches by adding holes to increase its length or torque.

[0009] The aforementioned tool for disassembling and assembling thermocouple connectors in a nuclear power plant reactor includes a wrench head that can be adjusted 80 degrees via a steering shaft.

[0010] The aforementioned tool for disassembling and assembling thermocouple connectors in a nuclear power plant reactor includes a wrench head with a wrench head slot for clamping and disassembling the thermocouple connector.

[0011] The aforementioned tool for disassembling and assembling thermocouple connectors in a nuclear power plant reactor includes a wrench head with a ratchet for providing short-term torque adjustment of the applied force direction.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the nuclear power plant reactor thermocouple connector disassembly and assembly tool provided by this utility model, through structural design, on the one hand, provides workers with a more convenient force application method and makes the operation more labor-saving during disassembly and assembly; on the other hand, it standardizes the force application direction when disassembling and assembling cable connectors, improving the convenience and reliability of disassembly and assembly work. Attached Figure Description

[0013] Figure 1 The figure shown is an overall structural diagram of a nuclear power plant reactor thermocouple connector disassembly and assembly tool according to the present invention.

[0014] Figure 2 The image shown is a front view of a nuclear power plant reactor thermocouple connector disassembly and assembly tool according to this utility model.

[0015] Figure 3 The image shown is a top view of a nuclear power plant reactor thermocouple connector disassembly and assembly tool according to this utility model.

[0016] Figure 4 The image shown is a left view of a tool for disassembling and assembling a nuclear power plant reactor thermocouple connector according to this utility model.

[0017] The following are the labels in the attached diagram: 1. Anti-slip grip; 2. Mounting hole; 3. Folding bar; 4. Wrench head; 5. Wrench head latch; 6. Steering shaft. Detailed Implementation

[0018] To address the issues of low convenience and reliability in disassembling and assembling thermocouple detector cable connectors using existing general-purpose tools, this utility model provides a tool for disassembling and assembling thermocouple connectors in nuclear power plant reactors. For example... Figures 1-3As shown, the disassembly and assembly tool includes: an L-shaped bent lever 3, one end of which is provided with a handheld end for gripping. The lower part of the handheld end is provided with a non-slip handle 1 that can be used with field non-slip gloves to increase friction, providing a good grip for the entire tool during operation. An attachment hole 2 is provided at the bottom of the handheld end of the lever 3, through which it can be used with other wrenches to increase the tool's length or the torque generated during operation. The bent portion of the L-shaped lever 3 is preferably bent at a 90-degree angle to facilitate disassembly and assembly work in areas with dense cable joints.

[0019] At the other end of the lever 3 is a clamping end, which is equipped with a wrench head 4 connected to the clamping end via a steering shaft 6. The wrench head 4 can be adjusted in orientation by 180 degrees using the steering shaft 6. The wrench head 4 also has a wrench head latch 5 for clamping and disassembling thermocouple connectors. A ratchet can be added to the wrench head latch 5 to provide a short-term twisting adjustment of the applied force direction.

[0020] It should be noted that the combination of the technical features in the embodiments of this utility model is not limited to the combination methods recorded in the embodiments of this utility model or the combination methods recorded in specific embodiments. All technical features recorded in this utility model can be freely combined or combined in any way, unless there is a contradiction between them.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nuclear power plant reactor thermocouple junction disassembly tool characterized by, The dismounting tool comprises an L-shaped bent folding rod (3), one end of which is provided with a hand holding end, the lower part of the hand holding end is provided with an anti-skid handle (1), the bottom of the hand holding end of the folding rod (3) is provided with a mounting hole (2), the other end of the folding rod (3) is a clamping end, and a wrench head (4) connected to the clamping end through a turning shaft (6) is arranged on the clamping end.

2. A tool for disassembling a thermocouple junction of a nuclear reactor according to claim 1, characterized in that, The anti-skid handle (1) can be used in cooperation with an anti-skid glove on site.

3. A tool for disassembling a thermocouple junction of a nuclear reactor according to claim 1, characterized in that, The dismounting tool can be matched with other wrenches through the mounting hole (2) to increase the length or torque.

4. The tool of claim 1, wherein, The wrench head (4) of the dismounting tool can provide 180-degree direction adjustment through the turning shaft (6).

5. The tool of claim 1, wherein, The wrench head (4) is provided with a wrench head socket (5) for clamping and dismounting a thermocouple joint.

6. A nuclear power plant reactor thermocouple junction tool according to claim 5, wherein, The wrench head socket (5) can be provided with a ratchet wheel to provide the function of adjusting the force direction for a short time.

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