Special dismounting tool for clamping piece of rod position and rod control system of nuclear power plant

Abstract

The utility model discloses a special dismounting tool for a clamping piece of a rod position and rod control system of a nuclear power plant, which comprises a dismounting main body, a handheld part and two clamping parts, and the handheld part and the clamping parts are respectively and fixedly connected with the dismounting main body; the two clamping parts are arranged on the two sides of the handheld part in an axial symmetry mode, and each clamping part is provided with a T-shaped hole and communicated with the outside. According to the dismounting tool special for the rod position and rod control system clamping piece of the nuclear power plant, the T-shaped holes are formed in the clamping parts and matched with the hourglass type grabbing rods of the rod position and rod control system clamping piece of the nuclear power plant in shape, the two hourglass type grabbing rods of the rod position and rod control system clamping piece of the nuclear power plant are grabbed at the same time through the two clamping parts, and force is even; the nuclear power plant rod position and rod control system clamping piece can be conveniently disassembled and assembled, meanwhile, the nuclear power plant rod position and rod control system can be prevented from being extruded or deforming, the disassembling and assembling efficiency is improved, and the damage risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power plant rod control and rod position system equipment maintenance, in particular to a special disassembly and assembly tool for a rod position and rod control system clamp of a nuclear power plant. Background Art

[0002] During the operation of the nuclear power rod control and rod position system of a nuclear power plant, multiple failures occurred. Specifically: the rod position and rod control system cards installed in different racks control the movement and retention of a bunch of control rods by generating specific current timing. When the rod position and rod control system card fails, the corresponding rod bundle will enter a double clamping state, and the action of the same type of control rods will be locked. In particular, during the RGL02 / 04 test and the power increase and decrease of the unit, if the rod position and rod control system card fails, the control rods will not be in the required rod position. The operating technical specifications require the unit to retreat to the NS / SG mode within 1 hour. Therefore, the rapid handling of the rod position and rod control system card failure is particularly important, and at this time, the efficiency of the removal and installation of the rod position and rod control system card determines the duration of the entire maintenance work.

[0003] The traditional way of disassembling and assembling the clamps of the rod position and rod control system is completely done by hand. The main force points when disassembling and assembling the clamps are the two hourglass-shaped gripping rods on the clamps of the rod position and rod control system. Under normal circumstances, they are gripped by two hands, but the strength of the two hands is often unbalanced, resulting in uneven force during disassembly and assembly, causing the clamps to be squeezed or deformed, and in severe cases, the positioning pins of the clamps will be damaged. In addition, disassembling and assembling the clamps of the rod position and rod control system completely by hand also has shortcomings such as long disassembly and assembly time, slow speed, and high risk of falling. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a special disassembly and assembly tool for the clamping parts of the rod position and rod control system of a nuclear power plant.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a special disassembly and assembly tool for the clamp of the rod position and rod control system of a nuclear power plant, comprising a disassembly and assembly main body, a hand-held part and two clamping parts, wherein the hand-held part and the clamping part are respectively fixedly connected to the disassembly and assembly main body;

[0006] The two clamping parts are axially symmetrically arranged on both sides of the hand-held part, and the clamping parts are provided with T-shaped holes and communicated with the outside.

[0007] In some embodiments, the T-shaped hole includes a clamping hole and an avoidance hole, the clamping hole penetrates the first side surface and the second side surface adjacent to the disassembly and assembly body and communicates with the avoidance hole, and the avoidance hole penetrates the second side surface;

[0008] The diameter of the clamping hole is smaller than the diameter of the avoidance hole.

[0009] In some embodiments, the avoidance hole passes through the disassembly body and passes through the third side surface of the disassembly body;

[0010] The third side surface is opposite to the second side surface.

[0011] In some embodiments, the clamping hole includes a first clamping section with a square cross section and a second clamping section with an arc-shaped cross section, and the first clamping section and the second clamping section are arranged in sequence from the second side surface to the third side surface of the disassembly body;

[0012] The third side surface is opposite to the second side surface.

[0013] In some embodiments, the avoidance hole includes a first avoidance section with a square vertical section and a second avoidance section with an arc vertical section, and the first avoidance section is arranged in the middle of the second avoidance section;

[0014] The first avoidance section is communicated with the clamping hole.

[0015] In some embodiments, the hand-held portion is provided with a window, and the hand-held portion is an axisymmetric structure with the center line of the window as the axis of symmetry.

[0016] In some embodiments, the width of the first clamping section is 6 mm-10 mm.

[0017] In some embodiments, the minimum diameter of the avoidance hole is greater than 12 mm.

[0018] In some embodiments, the disassembly body, the hand-held portion and the clamping portion are an integrated structure.

[0019] In some embodiments, the thickness of the hand-held portion is smaller than the thickness of the detachable body, and the hand-held portion is indented along two sides of the detachable body.

[0020] By implementing the utility model, the following beneficial effects are achieved:

[0021] The utility model of a special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant comprises a disassembly and assembly main body, a hand-held part and two clamping parts, wherein the hand-held part and the clamping part are respectively fixedly connected to the disassembly and assembly main body; the two clamping parts are axially symmetrically arranged on both sides of the hand-held part, and the clamping part is provided with a T-shaped hole and communicated with the outside. The clamping part is provided with a T-shaped hole that matches the shape of the hourglass-shaped grasping rod of the rod position and rod control system of a nuclear power plant. The two hourglass-shaped grasping rods of the rod position and rod control system of a nuclear power plant are grasped by the two clamping parts at the same time, and the force is evenly applied, which can facilitate the disassembly and assembly of the rod position and rod control system of a nuclear power plant. At the same time, it can prevent the rod position and rod control system of a nuclear power plant from being squeezed or deformed, thereby improving the disassembly and assembly efficiency and reducing the risk of damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a special disassembly and assembly tool for a rod position and rod control system of a nuclear power plant according to an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Top view of the special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] Generally, two hourglass-shaped gripping rods are fixed on the rod position and rod control system of a nuclear power plant. The hourglass-shaped gripping rods are small in the middle and large at both ends. The hourglass-shaped gripping rod includes a throat, a fixed end and a head, and the throat is arranged between the fixed end and the head. In addition, there is a smooth transition between the throat and the head, and the specific range of the throat and the head can be determined according to actual conditions. It can be understood that the rod position and rod control system of a nuclear power plant is a prior art and is not shown in the figure.

[0030] See also Figure 1 and Figure 2 One embodiment of the utility model discloses a special disassembly and assembly tool for a nuclear power plant rod position and rod control system card, which is used for disassembly and assembly of a nuclear power plant rod position and rod control system card. In particular, in the case of a nuclear power plant rod position and rod control system card failure, the nuclear power plant rod position and rod control system card can be quickly disassembled and assembled, thereby improving the disassembly and assembly efficiency and reducing the overall duration of maintenance work.

[0031] The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant includes a disassembly and assembly body 1, a handheld part 2 and two clamping parts 3, and the handheld part 2 and the clamping part 3 are respectively fixedly connected to the disassembly and assembly body 1. The two clamping parts 3 are axially symmetrically arranged on both sides of the handheld part 2, and the clamping part 3 is provided with a T-shaped hole and communicates with the outside. It can be understood that the disassembly and assembly body 1, the handheld part 2 and the clamping part 3 can be a split structure, fixed by welding, bonding or fastener connection. Alternatively, the disassembly and assembly body 1, the handheld part 2 and the clamping part 3 can also be an integrated structure, which is formed by integral injection molding.

[0032] Preferably, Figure 1 A structure of the disassembly body 1 is shown, which is in the shape of a cuboid and includes a first side 11, a second side 12 and a third side. The first side 11 is adjacent to the second side 12 and adjacent to the third side, the second side 12 is opposite to the third side, and the third side is not shown in the figure. It can be understood that in some other embodiments, the utility model does not limit the shape of the disassembly body 1, which can be a cylinder, an irregular cylinder or other polyhedron.

[0033] In some embodiments, the T-shaped hole includes a clamping hole 31 and an avoidance hole 32. The clamping hole 31 penetrates the first side surface 11 and the second side surface 12 adjacent to the disassembly and assembly body 1 and communicates with the avoidance hole 32. The avoidance hole 32 penetrates the second side surface 12. The diameter of the clamping hole 31 is smaller than the diameter of the avoidance hole 32. It can be understood that the diameter of the clamping hole 31 is larger than the diameter of the throat of the hourglass-shaped gripping rod and smaller than the diameter of the head of the hourglass-shaped gripping rod. The diameter of the avoidance hole 32 is larger than the diameter of the head of the hourglass-shaped gripping rod. Preferably, the diameter of the clamping hole 31 is 6mm-10mm, and the minimum diameter of the avoidance hole 32 is greater than 12mm. For example, the diameter of the clamping hole 31 is 6mm, 7mm, 8mm, 9mm, 10mm, etc., and the minimum diameter of the avoidance hole 32 is 12mm, 13mm, 14mm, 15mm, etc.

[0034] In some embodiments, the avoidance hole 32 passes through the disassembly body 1 and passes through the third side surface of the disassembly body 1. The third side surface is opposite to the second side surface 12. It can be understood that the avoidance hole 32 is to completely avoid the head of the hourglass-shaped gripping rod. When the thickness of the disassembly body 1 is thick enough, that is, the thickness of the disassembly body 1 is greater than the diameter of the head of the hourglass-shaped gripping rod, the avoidance hole 32 can be set to a depth as needed, and the utility model does not limit this.

[0035] In some embodiments, the clamping hole 31 includes a first clamping section 311 with a square cross section and a second clamping section 312 with an arc-shaped cross section. The first clamping section 311 and the second clamping section 312 are arranged in sequence from the second side surface 12 to the third side surface of the disassembly and assembly body 1. Among them, the arc-shaped cross section of the second clamping section 312 can prevent damage to the throat of the hourglass-shaped gripping rod. Preferably, the width of the first clamping section 311 is 6mm-10mm. For example, 6mm, 7mm, 8mm, 9mm, 10mm, etc. The length of the first clamping section 311 is greater than the diameter of the throat of the hourglass-shaped gripping rod, so that the throat of the hourglass-shaped gripping rod is completely extended into the clamping hole 31.

[0036] In some embodiments, the avoidance hole 32 includes a first avoidance section 321 with a square vertical section and a second avoidance section 322 with an arc-shaped vertical section, the first avoidance section 321 is arranged in the middle of the second avoidance section 322, and the first avoidance section 321 is connected to the clamping hole 31. The arc-shaped vertical section of the second avoidance section 322 can prevent damage to the head of the hourglass-shaped gripping rod.

[0037] In some embodiments, the handheld portion 2 is provided with a window 21, and the handheld portion 2 is axially symmetrical with the center line of the window 21 as the axis of symmetry. The window 21 is convenient for holding. The axially symmetrical structure with the center line of the window 21 as the axis of symmetry can balance the force and prevent the deformation of the clamping parts of the rod position and rod control system of the nuclear power plant caused by uneven force.

[0038] In some embodiments, in order to facilitate picking up, the thickness of the handheld portion 2 is less than the thickness of the disassembly body 1, and the handheld portion 2 is indented along both sides of the disassembly body 1. When placed on a plane, the handheld portion 2 does not completely fit the plane. This can prevent the entire disassembly tool for the rod position and rod control system of a nuclear power plant from being completely attached to the plane and difficult to pick up.

[0039] The method of using the utility model is that the special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant is close to the rod position and rod control system of the nuclear power plant, and the head of the hourglass-shaped gripping rod is clamped through the T-shaped hole, wherein the clamping hole 31 is sleeved outside the throat of the hourglass-shaped gripping rod, and the avoidance hole 32 is sleeved outside the head of the hourglass-shaped gripping rod. Applying external force, such as holding the hand-held part 2 and pulling it outward, the head is subjected to external force, and the rod position and rod control system of the nuclear power plant can be removed from the equipment.

[0040] By implementing the utility model, the following beneficial effects are achieved:

[0041] The clamping part 3 of the special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant of the utility model is provided with a T-shaped hole which matches the shape of the hourglass-shaped grasping rod of the rod position and rod control system of the nuclear power plant. The two hourglass-shaped grasping rods of the rod position and rod control system of the nuclear power plant are grasped simultaneously by the two clamping parts 3, and the force is evenly applied, which can facilitate the disassembly and assembly of the rod position and rod control system of the nuclear power plant. At the same time, it can prevent the rod position and rod control system of the nuclear power plant from being squeezed or deformed, thereby improving the disassembly and assembly efficiency and reducing the risk of damage.

[0042] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant, characterized in that: It comprises a disassembly main body (1), a hand-held part (2) and two clamping parts (3), wherein the hand-held part (2) and the clamping parts (3) are respectively fixedly connected to the disassembly main body (1); The two clamping parts (3) are axially symmetrically arranged on both sides of the hand-held part (2); the clamping parts (3) are provided with T-shaped holes and communicate with the outside.

2. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 1, characterized in that: The T-shaped hole comprises a clamping hole (31) and an avoidance hole (32); the clamping hole (31) penetrates the first side surface (11) and the second side surface (12) adjacent to the disassembly and assembly main body (1) and communicates with the avoidance hole (32); and the avoidance hole (32) penetrates the second side surface (12); The diameter of the clamping hole (31) is smaller than the diameter of the avoidance hole (32).

3. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 2, characterized in that: The avoidance hole (32) passes through the disassembly main body (1) and passes through the third side surface of the disassembly main body (1); The third side surface is opposite to the second side surface (12).

4. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 2, characterized in that: The clamping hole (31) comprises a first clamping section (311) with a square cross section and a second clamping section (312) with an arc-shaped cross section, the first clamping section (311) and the second clamping section (312) being arranged in sequence from the second side surface (12) to the third side surface of the disassembly and assembly body (1); The third side surface is opposite to the second side surface (12).

5. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 2, characterized in that: The avoidance hole (32) comprises a first avoidance section (321) with a square vertical cross section and a second avoidance section (322) with an arc-shaped vertical cross section, wherein the first avoidance section (321) is arranged in the middle of the second avoidance section (322); The first avoidance section (321) is in communication with the clamping hole (31).

6. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 2, characterized in that: The handheld portion (2) is provided with a window (21), and the handheld portion (2) presents an axisymmetric structure with the center line of the window (21) as the axis of symmetry.

7. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to claim 4, characterized in that: The width of the first clamping section (311) is 6 mm-10 mm.

8. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to any one of claims 2 to 7, characterized in that: The minimum diameter of the avoidance hole (32) is greater than 12 mm.

9. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to any one of claims 1 to 7, characterized in that: The disassembly and assembly main body (1), the hand-held part (2) and the clamping part (3) are an integrated structure.

10. The special disassembly and assembly tool for the rod position and rod control system of a nuclear power plant according to any one of claims 1 to 7, characterized in that: The thickness of the hand-held portion (2) is smaller than the thickness of the detachable main body (1), and the hand-held portion (2) is indented along two sides of the detachable main body (1).

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