Portable finger sleeve pulling and inserting lever device for nuclear power station

Abstract

The utility model discloses a portable finger sleeve pulling and inserting lever device for a nuclear power station, relates to the technical field of nuclear instruments of the nuclear power station, and solves the problem that an existing finger sleeve pulling and inserting tool is heavy. The finger sleeve pulling and inserting lever device comprises a stroke rod of a device body, one end of the stroke rod is connected with a lever, the stroke rod sequentially penetrates through a tool fixing clamp and a finger sleeve handle claw, the finger sleeve handle claw is fixed to the stroke rod through a handle claw fixing device, and the lever is connected with the tool fixing clamp through a lever moving fulcrum. According to the terminal device, through the structural design, the overall weight of the device is reduced, and meanwhile the convenience and timeliness of finger sleeve pulling and inserting work are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of nuclear power plant instrumentation technology, specifically relating to a portable finger sleeve insertion and removal lever device for nuclear power plants. Background Technology

[0002] Nuclear power plant core measurement systems use several movable microfission chambers to measure core neutron flux. Each movable microfission chamber enters the core through a stainless steel finger sleeve to measure core neutron flux. To avoid interfering with the fuel loading process, the finger sleeve must be pulled out before each unloading and pushed back into place after loading is complete.

[0003] The finger sleeve is inserted into the reactor pressure vessel from the bottom of the reactor core through a sealing assembly. An O-ring and packing are used to seal the connection between the sealing assembly and the outer wall of the finger sleeve. The O-ring and packing are then tightened using an inner plug and nut to ensure no leakage of the primary coolant under various operating conditions. The O-ring has strong compressive resistance, making the insertion and removal of the finger sleeve quite difficult. Because a small section of the finger sleeve needs to be pulled out before using a tool to loosen the tightened inner plug, the initial insertion and removal of the finger sleeve is very laborious. Existing finger sleeve insertion and removal tools are fixed to a finger sleeve support, using a threaded connection to secure the finger sleeve handle thread, and a chain drive to complete the extraction action. These tools are bulky, making them inconvenient to carry and laborious to operate. Utility Model Content

[0004] The purpose of this utility model is to provide a portable finger sleeve insertion and removal lever device for nuclear power plants, which solves the problems of existing finger sleeve insertion and removal tools being bulky and labor-intensive, while reducing the weight of the device and ensuring the convenience and timeliness of finger sleeve insertion and removal.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a portable finger sleeve insertion and removal lever device for nuclear power plants. The device includes: a stroke rod as the main body of the device, one end of which is connected to a lever. The stroke rod passes through a tool fixing clamp and a finger sleeve handle claw in sequence. The finger sleeve handle claw is fixed on the stroke rod by a handle claw fixing device. The lever is connected to the tool fixing clamp through a lever movement fulcrum.

[0006] The aforementioned portable finger sleeve insertion and removal lever device for nuclear power plants includes a guide cylinder on the stroke rod, through which the tool fixing clamp slides along the axial direction of the stroke rod.

[0007] The aforementioned portable finger sleeve insertion and removal lever device for nuclear power plants includes a finger sleeve handle claw designed to engage with the handle at the end of the finger sleeve, thereby enabling the finger sleeve to move.

[0008] The aforementioned portable finger sleeve insertion / removal lever device for nuclear power plants includes a finger sleeve handle claw that can move along the stroke rod direction.

[0009] The aforementioned portable finger sleeve insertion and removal lever device for nuclear power plants has several positioning holes on the side of the stroke rod that is not connected to the lever. The finger sleeve handle claw is fixed to the stroke rod through the positioning holes and moves together with it.

[0010] The aforementioned portable finger sleeve insertion and removal lever device for nuclear power plants, wherein when the lever is pressed, it can drive the lever's fulcrum to rotate, thereby driving the stroke rod and the finger sleeve handle claw to move.

[0011] The aforementioned portable finger sleeve insertion and removal lever device for nuclear power plants includes an arched clamp on the tool clamp, which enables the tool clamp to be installed onto the sealing assembly.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the portable finger sleeve insertion and removal lever device for nuclear power plants provided by this utility model improves the convenience and timeliness of finger sleeve insertion and removal work through structural design, and reduces the manual use of the insertion and removal process; on the other hand, it reduces the weight of the overall device, making it convenient for transportation and use. Attached Figure Description

[0013] Figure 1 The figure shown is a schematic diagram of the overall structure of a portable finger sleeve insertion and removal lever device for nuclear power plants according to the present invention.

[0014] Figure 2 The image shown is a front view of a portable finger sleeve insertion / removal lever device for nuclear power plants according to this utility model.

[0015] Figure 3 The image shown is a left view of a portable finger sleeve insertion / removal lever device for nuclear power plants according to this utility model.

[0016] The following are the labels in the attached diagram: 1. Travel lever; 2. Tool clamp; 3. Lever; 4. Lever fulcrum; 5. Finger sleeve handle claw; 6. Handle claw fixing device; 7. Positioning hole; 8. Guide cylinder. Detailed Implementation

[0017] To address the problem of the bulky nature of existing finger cannula insertion and removal tools, this utility model provides a portable finger cannula insertion and removal lever device for nuclear power plants. For example... Figures 1-3As shown, the device includes: a stroke rod 1, a tool clamp 2, a lever 3, a lever fulcrum 4, a finger sleeve handle claw 5, a handle claw fixing device 6, positioning holes 7, and a guide cylinder 8. The main body of the device is the stroke rod 1, one end of which is connected to the lever 3. The stroke rod 1 passes sequentially through the tool clamp 2 and the finger sleeve handle claw 5. The finger sleeve handle claw 5 is fixed to the stroke rod 1 by the handle claw fixing device 6, allowing it to move along the stroke rod 1 and converting the force on the lever 3 into a horizontal force driving the finger sleeve handle claw 5. The finger sleeve handle claw 5 is designed to engage with the handle at the end of the finger sleeve, enabling movement of the finger sleeve. Several positioning holes 7 are provided on the side of the stroke rod 1 not connected to the lever 3, allowing the finger sleeve handle claw 5 to be fixed when moving on the stroke rod 1. A guide cylinder 8 is provided on the stroke rod 1, and the tool clamp 2 is fixed to the stroke rod 1 via the guide cylinder 8, preventing jamming during use. The lever 3 is connected to the tool clamp 2 via the lever fulcrum 4. When lever 3 is pressed, it can drive the lever fulcrum 4 to move, which in turn drives the finger sleeve handle claw 5 to move. The tool fixing clip 2 is also provided with an arched clip, which allows the tool fixing clip 2 to be installed on the sealing assembly.

[0018] When using the finger sleeve insertion and removal lever device, the following steps can be taken:

[0019] 1. Install the tool retainer 2 between the upper and lower nuts of the sealing assembly;

[0020] 2. Connect the finger sleeve handle claw 5 to the handle at the end of the finger sleeve;

[0021] 3. Adjust the position of the travel lever 1 according to the pull-out or insertion operation;

[0022] 4. Fix the finger sleeve handle claw 5 to the travel rod 1 and tighten the handle claw fixing device 6;

[0023] 5. Apply force to lever 3 to move the finger sleeve and achieve insertion and removal.

[0024] 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.

[0025] 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 portable finger cot tube extraction lever device for nuclear power plants, characterized by, The device comprises a stroke rod (1) as the device main body, one end of which is connected with a lever (3), the stroke rod (1) passes through a tool fixing clamp (2) and a finger sleeve handle claw (5) in sequence, the finger sleeve handle claw (5) is fixed on the stroke rod (1) through a handle claw fixing device (6), and the lever (3) is connected with the tool fixing clamp (2) through a lever moving support point (4).

2. A portable finger loop spanner lever device for nuclear power plants according to claim 1, characterized in that, A guide cylinder (8) is arranged on the stroke rod (1), and the tool fixing clamp (2) slides on the stroke rod (1) along the rod axis through the guide cylinder (8).

3. A portable finger loop pipe lever device for nuclear power plants according to claim 1, characterized in that, The finger sleeve handle claw (5) is designed to be clamped on the end handle of the finger sleeve and to drive the finger sleeve to move.

4. A portable finger loop spanner lever device for nuclear power plants according to claim 1, characterized in that, The finger sleeve handle claw (5) can move on the stroke rod (1) along the direction of the stroke rod (1).

5. A portable finger loop spanner lever device for nuclear power plants according to claim 4, characterized in that, A plurality of positioning holes (7) are arranged on the side of the stroke rod (1) not connected with the lever (3), the finger sleeve handle claw (5) is fixed on the stroke rod (1) through the positioning holes (7) and moves together with the stroke rod (1).

6. A portable finger loop spanner lever device for nuclear power plants according to claim 1, characterized in that, When the lever (3) is pressed, the lever moving support point (4) is driven to rotate, and then the stroke rod (1) and the finger sleeve handle claw (5) are driven to move.

7. A portable finger loop spanner lever device for nuclear power plants according to claim 1, characterized in that, An arc-shaped clamping piece is further arranged on the tool fixing clamp (2), so that the tool fixing clamp (2) can be installed on a sealing assembly.

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