A tool for removing mosaics from the control room panel

Abstract

The present invention relates to the field of nuclear power maintenance technology, and specifically discloses a tool for removing mosaics from a panel in a main control room, wherein a barb is processed on the lower part of the main body, and when the main body is extended between adjacent mosaics, the barb can be clamped on the outer edge of the mosaic, and then the mosaic can be removed by vertically lifting the removal tool upward. The present invention can remove the mosaic conveniently and quickly, which not only saves subsequent maintenance time, but also improves equipment reliability and ensures user safety.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power maintenance, and in particular relates to a tool for removing mosaics from a panel in a main control room. Background Art

[0002] The main control room of a nuclear power plant generally uses a mosaic panel. The panel is seismic-resistant and has a grid-type frame at the bottom, on which mosaics are compactly arranged. Taking a third-generation nuclear power unit as an example, the panel in the main control room is arranged with more than 90 types of mosaics, about 12,000 pieces, including alarm indicators, recorders, measuring instruments, manual and automatic switching switches, start and stop buttons, etc. Most mosaics are made of plastic, mainly in two specifications of 24mm*48mm and 48mm*48mm, and the weight generally does not exceed 50 grams. According to the design, mosaics need to be arranged closely. Affected by the installation and manufacturing accuracy, the distance between different mosaics is generally between 0.5 and 1.0 mm. Since the distance between adjacent mosaics is very small, it is difficult to remove them with ordinary tools, and it is easy to damage the mosaics.

[0003] Before this removal tool was used, there was no good removal tool in China. People usually used tweezers or screwdrivers to pry out the mosaics, which was inefficient and easily damaged and deformed. Since there are electronic components on the mosaic tray, using tweezers and other pure metal parts can easily cause electric shock and short circuit risks of electrical components. Summary of the invention

[0004] The purpose of the present invention is to provide a tool for removing mosaics from a main control room panel, which can remove mosaics conveniently and quickly.

[0005] The technical solution of the present invention is as follows:

[0006] A tool for removing mosaics from a main control room panel, used for removing mosaics from a mosaic panel in a nuclear power plant main control room, comprising a heat shrinkable sleeve, a body and a barb;

[0007] The main body is a rectangular sheet structure, and the heat shrinkable tube is sleeved on the upper part of the main body, which is convenient to grasp and insulated as a hand-held part;

[0008] A barb is processed at the lower part of the body, and when the body is extended between adjacent mosaics, it can be clamped on the outer edge of the mosaic, and then the mosaic can be taken out by vertically lifting the removal tool upward.

[0009] A scale A is provided on the left side edge of the main body, and a 0 scale mark is provided on the lower edge of the main body for reading the depth of insertion into the mosaic to avoid inserting too deep into the mosaic and contacting the components below to cause a short circuit.

[0010] A scale B is provided on the right side edge of the body shown, with the 0 scale mark at the lower edge of the barb, for reading the distance that the barb extends into the mosaic to determine whether the locking position has been reached.

[0011] There are N barbs, N≥1; when used to take out large pieces of mosaics, more barbs can be arranged side by side to make the clamping more stable.

[0012] A screw hole is processed at the center of the upper part of the body, and bodies of different thicknesses are fixed together by connecting bolts and nuts to form a set; when removing the mosaic, a body of appropriate thickness is selected, connected to the heat shrink tubing, and the operation can begin.

[0013] The upper part of the body is processed into a semicircular edge or chamfer to facilitate insertion and avoid scratching the heat shrink tubing; the two bottom feet of the body are processed into a 1 / 4 arc shape.

[0014] The remarkable effects of the present invention are:

[0015] (1) The present invention can remove mosaics conveniently and quickly, which not only saves subsequent maintenance time, but also improves equipment reliability and ensures user safety.

[0016] (2) The device of the present invention adopts a one-way barb, which is closed during insertion and can smoothly pass through the gap between mosaics. After being inserted to a sufficient depth, the barb automatically expands due to metal stress, and the mosaic is smoothly removed.

[0017] (3) The device of the present invention is suitable for working environments with narrow space gaps and is easy to carry and operate.

[0018] (4) The device of the present invention is a complete set of equipment, and different tools can be selected according to different gaps.

[0019] (5) The heat shrink tubing of the device of the present invention is detachable and suitable for complete set assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a single barb extraction tool;

[0021] Figure 2 A schematic diagram of a double barb extraction tool;

[0022] Figure 3 Schematic diagram of tools for removing mosaic sets;

[0023] Figure 4 Schematic diagram of mosaic structure.

[0024] In the figure: 1. heat shrink tubing; 2. body; 3. barb; 4. connecting bolt; 5. mosaic; 6. outer edge of mosaic. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 A tool for removing mosaics from a control room panel is shown, which is used to remove Figure 4 The mosaic 5 shown on the mosaic panel of the main control room of the nuclear power plant includes a heat shrink sleeve 1, a body 2 and a barb 3.

[0027] The body 2 is a rectangular sheet structure, and the heat shrink tube 1 is sleeved on the upper part of the body 2, which is convenient for gripping and insulated. The upper part of the body 2 is processed into a semicircular edge or chamfer to facilitate insertion and avoid scratching the heat shrink tube 1, and the two bottom feet of the body 2 are processed into a 1 / 4 arc shape.

[0028] A barb 3 is processed at the lower part of the body 2, and when the body 2 is extended between adjacent mosaics 5, it can be clamped on the outer edge 6 of the mosaic. There are N barbs 3, N ≥ 1. When used to take out a large piece of mosaic 5, more barbs 3 can be arranged side by side to make the clamping more stable, such as Figure 2 shown.

[0029] A ruler A is provided on the left side of the body 2, with the 0 mark at the bottom edge of the body 2, for reading the depth of insertion into the mosaic 5 to avoid excessive insertion and contact with components below, thereby causing a short circuit; a ruler B is provided on the right side of the body 2, with the 0 mark at the bottom edge of the barb 3, for reading the distance that the barb 3 extends into the mosaic 5 to determine whether it has reached the stuck position.

[0030] like Figure 3 As shown, a screw hole is processed at the center position of the upper part of the body 2, and the bodies 2 of different thicknesses are fixed together by connecting bolts 4 and nuts to form a set.

[0031] When removing the mosaic, use a vernier caliper to measure the spacing between the outer edges 6 of adjacent mosaics, then unscrew the connecting bolts 4 and nuts on the removal tool set, select a body 2 of suitable thickness, and connect it to the heat shrink sleeve 1; make the side of the body 2 with the barb 3 face the mosaic 5 to be removed, extend the body 2 into the gap of the mosaic 5 to a certain depth, so that the barb 3 is stuck on the outer edge 6 of the mosaic; finally, lift the removal tool vertically upward to remove the mosaic 5.

Claims

1. A tool for removing mosaics from a control room panel, characterized by: Used for removing mosaics (5) from a mosaic tray table in a main control room of a nuclear power plant, comprising a heat shrink tubing (1), a body (2) and a barb (3); The body (2) is a rectangular thin sheet structure, and the heat shrinkable tube (1) is sleeved on the upper part of the body (2) and serves as a hand-held portion for easy grasping and insulation. A barb (3) is processed at the lower part of the body (2), and when the body (2) is extended between adjacent mosaics (5), it can be clamped on the outer edge (6) of the mosaic, and then the mosaic (5) can be removed by vertically lifting the removal tool upward.

2. A tool for removing mosaics from a main control room panel as claimed in claim 1, characterized in that: A scale A is provided on the left side edge of the body (2), with the 0 scale mark at the bottom edge of the body (2) for reading the depth of insertion of the mosaic (5) to avoid inserting too deep into the mosaic and contacting components below, thereby causing a short circuit.

3. A tool for removing mosaics from a main control room panel as claimed in claim 1, characterized in that: A scale B is provided on the right side edge of the body (2), with the 0 scale mark at the lower edge of the barb (3) for reading the distance that the barb (3) extends into the mosaic (5) to determine whether the locking position has been reached.

4. A tool for removing mosaics from a main control room panel as claimed in claim 1, characterized in that: The number of the barbs (3) is N, where N≥1.

5. The mosaic removal tool for the main control room panel as claimed in claim 1, characterized in that: A screw hole is processed at the center position of the upper part of the body (2), and bodies (2) of different thicknesses are fixed together by connecting bolts (4) and nuts to form a set; when removing the mosaic, a body (2) of suitable thickness is selected and connected to the heat shrink tubing (1) to start the operation.

6. A tool for removing mosaics from a main control room panel as claimed in claim 1, characterized in that: The upper part of the body (2) is processed into a semicircular edge or chamfer to facilitate insertion and avoid scratching the heat shrink tubing (1); the two bottom feet of the body (2) are processed into a 1 / 4 arc shape.

Images