Rod tool for pit operation of nuclear power plant

Abstract

The invention relates to the technical field of nuclear power operation tools, in particular to a rod tool for nuclear power plant pothole operation, which comprises a rod piece and a clamp assembly, one end of the clamp assembly is connected with the rod piece, and the other end of the clamp assembly is configured to be capable of clamping a molybdenum grease brush and / or a camera; according to the rod tool for pit hole operation of the nuclear power plant, a worker can operate in a pit hole remotely outside the pit hole, and the operation safety of the worker is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power operation tools, and in particular to a rod tool for pit operations in nuclear power plants. Background Art

[0002] During routine and overhaul operations in the control area of ​​a nuclear power plant, it is often necessary to open the manhole cover of a certain system to replace water filters that have been in service for a long time and have a high radioactive dose. These water filters are located in underground holes 2 meters deep. The replacement process includes lifting the manhole cover, visually inspecting the safety conditions inside the pit, arranging personnel to enter the narrow pit space to carry out the replacement work, and reconfirming the on-site conditions after completion. In addition, molybdenum grease needs to be applied to lubricate the bolts to ensure that they are installed in place.

[0003] Especially when observing the internal conditions of the pit and applying molybdenum grease, there are great safety hazards because the workers need to enter extremely narrow spaces. Summary of the invention

[0004] In view of the above shortcomings of the prior art, an object of the present invention is to provide a rod tool for pit operations in a nuclear power plant, which enables workers to perform operations inside the pit from a long distance outside the pit, thereby improving the operating safety of the workers.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a rod tool for pit operation in a nuclear power plant, comprising:

[0006] Rods;

[0007] A clamp assembly, one end of which is connected to the rod, and the other end of which is configured to clamp a molybdenum grease brush and / or a camera.

[0008] In one embodiment of the present invention, the clamp assembly includes a first clamp for clamping a molybdenum grease brush and a second clamp for clamping a camera; the first clamp and the second clamp are respectively detachably connected to the rod.

[0009] In one embodiment of the present invention, the first fixture comprises:

[0010] A connecting assembly connected to the rod;

[0011] A first clamping assembly connected to the connecting assembly, wherein the first clamping assembly is configured to clamp a cover plate of a molybdenum grease brush;

[0012] The second clamping assembly is connected to the connecting assembly and / or the first clamping assembly; the second clamping assembly is configured to be able to clamp the rod of the molybdenum grease brush.

[0013] In one embodiment of the present invention, the connection assembly includes a bottom plate and a connection portion disposed on one side of the bottom plate;

[0014] The first clamping assembly and the second clamping assembly are coaxially arranged; the first clamping assembly includes two first half clamps for use in conjunction with each other; the second clamping assembly includes two second half clamps for use in conjunction with each other;

[0015] One of the first half clamps is fixedly disposed on the other side of the base plate, and the first half clamp is fixedly connected to the second half clamp located on the same side.

[0016] In one embodiment of the present invention, the first clamping assembly and the second clamping assembly are spaced apart in the axial direction, and the first half clamp and the second half clamp that are connected are fixedly connected via a connecting piece.

[0017] In one embodiment of the present invention, the first half clamp and the second half clamp have different inner diameters.

[0018] In one embodiment of the present invention, the second clamp comprises a rod connector, one end of which is configured to be connectable to the rod member;

[0019] The other end of the connecting rod is provided with a split-petal clamp; the connecting rod is also sleeved with a sleeve for adjusting the clamping force of the split-petal clamp, and the inner ring of the sleeve is threadedly connected to the outer circumferential surface of the connecting rod.

[0020] In one embodiment of the present invention, a restraining portion for restraining the camera data line is provided on the rod connecting member.

[0021] In an embodiment of the present invention, the rod member is a telescopic rod, and the telescopic rod is provided with a joint knob for locking the telescopic length of the telescopic rod.

[0022] In one embodiment of the present invention, an anti-drop rope is provided at one end of the rod away from the clamp assembly.

[0023] In summary, in the present invention, by using a rod tool for pit operations in a nuclear power plant with a predetermined length, workers do not need to directly enter a narrow pit that may contain highly radioactive materials, thereby avoiding the risk of direct exposure to a harmful environment. The clamp assembly allows different devices (such as a camera or a molybdenum grease brush) to be clamped at its end, which increases the diversity and flexibility of operations and adapts to different operational requirements; and because workers can operate in a more comfortable position, the possibility of misoperation due to fatigue or tension is reduced, and the accuracy of the operation is improved. By installing a camera, workers can monitor the situation inside the pit in real time from the outside, discover and deal with potential problems in a timely manner, and enhance the safety and controllability of the operation. For example, if workers directly enter a narrow pit, they will block the light and the limited viewing angle will make it impossible to observe the situation inside the pit more clearly. At the same time, the rod tool for pit operations in a nuclear power plant has a simple structure, is easy to use, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of a rod tool for pit work in a nuclear power plant in one embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of a rod tool for pit operations in a nuclear power plant in another embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of one side of a first clamp in one embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the other side of the first clamp in one embodiment of the present invention;

[0029] Figure 5 is a cross-sectional view of a first clamp structure in one embodiment of the present invention;

[0030] Figure 6 is a schematic diagram of a second clamp structure in one embodiment of the present invention;

[0031] Figure 7 is a schematic diagram of the end surface structure of the second clamp in one embodiment of the present invention;

[0032] Figure 8 for Figure 7 Structural cross-sectional view along AA direction;

[0033] Explanation of component numbers: rod 1, joint knob 11, anti-drop rope 12, tail end screw cover 121, clamp assembly 20, first clamp 2, connecting assembly 21, base plate 211, connecting portion 212, first clamping assembly 22, first half clamp 221, second clamping assembly 23, second half clamp 231, connecting member 24, second clamp 3, rod connecting member 31, restraining portion 311, petal clamp 32, opening 321, sleeve 33, deformation portion 331. DETAILED DESCRIPTION

[0034] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0035] See also Figures 1 to 8 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0036] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any methods, equipment and materials of the prior art similar or equivalent to the methods, equipment and materials described in the embodiments of the present invention can also be used to implement the present invention.

[0037] A molybdenum grease brush is a tool used to apply molybdenum disulfide grease. A molybdenum grease brush generally includes an end cap, a rod and a brush head, and the rod connects the end cap and the brush head.

[0038] In view of the risk of falling and confinement caused by personnel entering the pit during the replacement of the water filter of a certain system in this case, this case provides a rod tool for pit operations in nuclear power plants, which can prevent personnel from entering the pit and help operators complete the work of inspecting holes and applying molybdenum grease. Since the space in the underground pit is small and there are many items, the long rod tool provided needs to have good rigidity and high strength to avoid collision damage caused by gravity falling; at the same time, since it is within the control area, the rod tool for pit operations in power plants should avoid the fall of small parts; the rod tool for pit operations in power plants must also have the function of equipping multiple tools to ensure that one rod can be used for multiple purposes; since the molybdenum grease brush inside the power plant is a special tool with a rare shape and size, the front end of the rod tool for pit operations in power plants needs to be specially designed according to the molybdenum grease brush structure. The molybdenum grease brush clamping tool. Therefore, the rod tool for pit operations in power plants provided in this case is multifunctional. The rod tool for pit operations in power plants achieves the effect of anti-fracture and easy use by using high strength, light weight, and materials to improve convenience of use.

[0039] See also Figure 1 Or 2, the present invention provides a rod tool for pit operations in a nuclear power plant, comprising a rod member 1 and a clamp assembly 20;

[0040] One end of the clamp assembly 20 is connected to the rod 1, and the other end of the clamp assembly 20 is configured to clamp a molybdenum grease brush and / or a camera.

[0041] It should be noted that the rod 1 and the clamp assembly 20 can be fixedly connected or detachably connected. Fixed connection such as welding connection can meet the use requirements, and detachable connection such as threaded connection or tightening by rope lock can meet the use requirements. The clamp assembly 20 should be able to clamp at least one of the molybdenum grease brush and the camera. It should be understood that the clamp assembly 20 can also be designed to clamp the molybdenum grease brush, the camera and other objects that need to be clamped at the same time. In this case, the clamp assembly 20 is connected to one end of the rod 1; when there are two clamp assemblies 20, one of which can clamp the molybdenum grease brush and the other can clamp the camera, then one end of the rod 1 can be connected to one clamp assembly 20 and the other end can be connected to the other clamp assembly 20, or both clamp assemblies 20 can be connected to one end of the rod 1, but when connecting one of the clamp assemblies 20, the other clamp assembly 20 needs to be disassembled. It should be understood that the camera can be connected to a display tool such as a mobile phone or a laptop computer to display the environment inside the pit.

[0042] As an optional embodiment of the present case, the rod 1 and / or the molybdenum grease brush and / or the camera include a searchlight to facilitate lighting during use.

[0043] In order to solve the problem of great safety hazards due to the need for workers to enter extremely narrow spaces when observing the internal conditions of the pit and applying molybdenum grease. In this case, by using a rod tool for nuclear power plant pit operations with a predetermined length, workers do not need to directly enter narrow pits that may contain highly radioactive materials, thereby avoiding the risk of direct exposure to harmful environments. The clamp assembly 20 allows different devices (such as cameras or molybdenum grease brushes) to be clamped at its end, which increases the diversity and flexibility of operations and adapts to different operational needs; and because workers can operate in a more comfortable position, the possibility of misoperation caused by fatigue or tension is reduced, and the accuracy of the operation is improved. By installing a camera, workers can monitor the internal conditions of the pit in real time from the outside, discover and deal with potential problems in a timely manner, and enhance the safety and controllability of the operation. For example, workers directly entering a narrow pit will block the light and the limited viewing angle will result in the inability to observe the internal conditions of the pit more clearly. At the same time, the rod tool for nuclear power plant pit operations has a simple structure, is easy to use and has strong practicality.

[0044] As an optional embodiment of the present case, the rod 1 is a hollow structure, so as to reduce the weight of the rod 1 and alleviate the work fatigue of the workers during operation.

[0045] As an optional embodiment of the present case, the rod 1 is made of carbon fiber material, so as to improve the structural strength of the rod 1 and reduce the weight of the rod 1, avoid collision damage caused by falling due to gravity, and facilitate staff to hold and use it.

[0046] See also Figure 1 Or 2, as an optional embodiment of the present case, the anti-drop rope 12 is connected to the rod 1 through a tail end screw cap 121, and the tail end screw cap 121 and the rod 1 are threadedly connected. If necessary, glue is applied between the tail end screw cap and the rod 1 to further improve the connection tightness.

[0047] As an optional embodiment of the present case, the clamp assembly 20 is made of aluminum alloy material to reduce the weight of the clamp assembly 20, thereby reducing the fatigue level of the workers during operation.

[0048] See also Figure 1 and 2 As an optional embodiment of the present case, the clamp assembly 20 includes a first clamp 2 for clamping a molybdenum grease brush and a second clamp 3 for clamping a camera; the first clamp 2 and the second clamp 3 are respectively detachably connected to the rod 1.

[0049] It should be noted that the clamp assembly 20 is connected to the rod 1 in a detachable manner, such as the clamp assembly 20 is connected to the rod 1 by a threaded connection, and the independent first clamp 2 and the second clamp 3 can be selected and used as needed, and can be used separately or simultaneously, providing more operation options. For example, when it is necessary to observe the environment in the pit, the rod 1 can be connected to the second clamp 3 holding the camera to facilitate long-distance observation of the environment in the pit; when it is necessary to apply molybdenum grease to the bolts in the pit, the second clamp 3 holding the camera on the rod 1 is removed, and the first clamp 2 holding the molybdenum grease brush is installed, so that the rod tool for pit operations in nuclear power plants in this case has multifunctionality, and increases the diversity and flexibility of operation to meet different operation requirements.

[0050] See also Figure 1 As an optional embodiment of the present case, the first clamp 2 includes a connecting component 21, a first clamping component 22 and a second clamping component 23; the connecting component 21 is connected to the rod 1; the first clamping component 22 is connected to the connecting component 21, and the first clamping component 22 is configured to be able to clamp the cover plate of the molybdenum grease brush; the second clamping component 23 is connected to the connecting component 21 and / or the first clamping component 22; the second clamping component 23 is configured to be able to clamp the rod of the molybdenum grease brush.

[0051] It should be noted that the clamp assembly 20 includes a connecting assembly 21, a first clamping assembly 22 and a second clamping assembly 23. This multi-level clamping design makes the entire structure more stable, because each clamping assembly bears a portion of the load, reducing the pressure on a single component; the first clamping assembly 22 is configured to be able to clamp a cover plate of the molybdenum grease brush, which can ensure that the molybdenum grease brush does not slide or fall off during use; the second clamping assembly 23 is configured to be able to clamp a rod of the molybdenum grease brush, which can improve the stability of the molybdenum grease brush during use; by specifically clamping different parts of the molybdenum grease brush, the entire clamp Component 20 can more effectively control the movement of the molybdenum grease brush; since the clamp component 20 is designed to be able to clamp two different parts of the molybdenum grease brush (the cover and the rod), this makes the molybdenum grease brush more stable when in use. Even if a certain clamping point becomes loose, the other clamping point can still keep the position of the molybdenum grease brush unchanged. This double clamping mechanism greatly improves the overall stability, reduces the risk of displacement or falling off of the molybdenum grease brush due to vibration or external force, and the risk of inaccurate brushing position due to looseness, thereby enabling the clamp component 20 to maintain stable performance in various complex and changing working environments.

[0052] See also Figure 3-5 As an optional embodiment of the present invention, the connecting assembly 21 includes a bottom plate 211 and a connecting portion 212 disposed on one side of the bottom plate 211;

[0053] The first clamping assembly 22 and the second clamping assembly 23 are coaxially arranged; the first clamping assembly 22 includes two first half clamps 221 for use together; the second clamping assembly 23 includes two second half clamps 231 for use together;

[0054] One of the first half clamps 221 is fixedly disposed on the other side of the bottom plate 211 , and the first half clamp 221 is fixedly connected to the second half clamp 231 located on the same side.

[0055] It should be noted that the rod 1 is threadedly connected to the connecting portion 212 of the connecting assembly 21, which can withstand large torque and tension, ensure the stability of the entire structure and is not easy to loosen or fall off; one end of the two first half clamps 221 is hinged, and the other end is fastened and connected by a threaded fastener, and one end of the two second half clamps 231 is hinged, and the other end is fastened and connected by another threaded fastener. When the first clamping assembly 22 clamps the cover plate of the molybdenum grease brush, the cover plate of the molybdenum grease brush can be in contact with the bottom plate 211, and the bottom plate 211 and the cover plate of the molybdenum grease brush are in contact with a large area, thereby improving the stability of the first clamping assembly 22 clamping the molybdenum grease brush;

[0056] One of the first half clamps 221 is fixedly arranged on the other side of the bottom plate 211, and the other first half clamp 221 can be movably adjusted relative to the first half clamp 221 fixed on the bottom plate 211; the other second half clamp 231 can be movably adjusted relative to the second half clamp 231 connected to the first half clamp 221, so as to facilitate the adjustment of the clamping force of the first clamping assembly 22 and the second clamping assembly 23. The two first half clamps 221 and / or the two second half clamps 231 are connected by fasteners, thereby providing a reliable connection method that can withstand large torque and tension; the first clamping assembly 22 includes two first half clamps 221 used in conjunction, and the two half clamps can tightly clamp the cover plate of the molybdenum grease brush to ensure that it does not slide or rotate during operation; the design of the first half clamp 221 enables it to adapt to molybdenum grease brush covers of different sizes and shapes, providing a certain degree of flexibility. The second clamping assembly 23 includes two second half clamps 231 used in conjunction with each other. The second half clamps 231 are used to clamp the rod of the molybdenum grease brush, further enhancing the overall stability. The second half clamps 231 are also designed to be adjustable to accommodate molybdenum grease brush rods of different diameters. The first clamping assembly 22 and the second clamping assembly 23 are coaxially arranged so that the first clamping assembly 22 and the second clamping assembly 23 share the same center line, thereby ensuring that the molybdenum grease brush always maintains the correct direction during the clamping process, which helps to maintain the stability of the molybdenum grease brush, reduce the unstable factors caused by eccentric force, and avoid the shaking or sliding of the molybdenum grease brush during use; when the molybdenum grease brush is clamped by the first clamp 2, the end cap of the molybdenum grease brush is against the bottom plate 211. Since the contact area between the bottom plate 211 and the end cap of the molybdenum grease brush is large, the stability of the first clamp 2 clamping the molybdenum grease brush can be strengthened to a certain extent.

[0057] See also Figure 3-5 As an optional embodiment of the present case, the first clamping assembly 22 and the second clamping assembly 23 are spaced apart in the axial direction, and the first half clamp 221 and the second half clamp 231 connected to each other are fixedly connected by a connecting piece 24.

[0058] It should be noted that the connecting member 24 can be one or more, and the first clamping component 22 and the second clamping component 23 are spaced apart in the axial direction, so as to provide better mechanical distribution, reduce stress concentration, and thus increase the stability of the entire structure. The spacing setting also helps to disperse the load, avoid excessive pressure on a single clamping component, and extend the service life of the clamp assembly 20; it should be understood that the distance between the first clamping component 22 and the second clamping component 23 in the axial direction can be set to be adjustable, or it can be set to a predetermined fixed spacing. When the distance between the first clamping component 22 and the second clamping component 23 in the axial direction is adjustable, the connecting member 24 is a telescopic structure, such as a telescopic rod.

[0059] See also Figure 3-5 As an optional embodiment of the present invention, the inner diameters of the first half clamp 221 and the second half clamp 231 are different.

[0060] It should be noted that different inner diameters can adapt to molybdenum grease brush covers and rods of different diameters. By accurately calculating the inner diameter, outer diameter and thickness of the clamp, it can be ensured that the clamp is closely matched with the cover and rod of the molybdenum grease brush to achieve the best connection effect and stability. The inner diameter is slightly larger than the outer diameter of the clamped object, and a certain gap is reserved to help the clamp better fit and fix the cover and rod of the molybdenum grease brush. The design of different inner diameters helps to disperse the load and reduce the pressure on a single clamp, thereby reducing the risk of stress concentration.

[0061] See also Figure 6-8 As an optional embodiment of the present invention, the second clamp 3 includes a rod connecting member 31, one end of which is configured to be connectable to the rod member 1;

[0062] A split clamp 32 is provided at the other end of the connecting rod 1 ; a sleeve 33 for adjusting the clamping force of the split clamp 32 is also sleeved on the connecting rod 1 , and the inner ring of the sleeve 33 is threadedly connected with the outer circumferential surface of the connecting rod 1 .

[0063] It should be noted that the thread matched with the inner ring of the sleeve 33 can be set on the outer circumference of the split-petal clamp 32, or can be set on the outer circumference of the connecting rod 1 except the split-petal clamp 32; the split-petal clamp 32 clamps or loosens the object by opening and closing multiple petals, and there are openings 321 or gaps between the petals to facilitate the adaptive adjustment of the distance between the petals. The design of the split-petal clamp 32 allows it to adapt to objects of different diameters, increasing the flexibility and applicability of the clamp assembly 20. The adjustment mechanism of the sleeve 33 is connected by threaded matching, allowing the clamping force of the split-petal clamp 32 to be adjusted as needed, so that the clamp assembly 20 can adapt to different working conditions and requirements. In this case, the split-petal clamp 32 is used to clamp cameras of different sizes. The inner ring of the sleeve 33 is threadedly connected with the outer circumferential surface of the split clamp 32 to ensure the stability and accuracy of the clamping force; one end of the rod connector 31 is connected to the rod 1, for example, it can be a fixed connection or a detachable connection, the fixed connection is such as welding, and the detachable connection is such as a threaded connection.

[0064] See also Figure 6-8 As an optional embodiment of the present invention, the rod connecting member 31 is provided with a restraining portion 311 for restraining the camera data line.

[0065] It should be noted that the restraint portion 311 can be a through hole or a slot, as long as it can restrain the camera data cable to prevent it from swinging randomly; by restraining the camera data cable, it can be prevented from being accidentally pulled or hung on other objects during operation, thereby preventing the data cable from being entangled in the pit, thereby reducing potential safety hazards. The design of the restraint portion 311 helps to fix the camera data cable, preventing it from shaking or shifting during operation and blocking the camera, thereby improving the camera's shooting quality.

[0066] Please refer to 1 or 2, as an optional embodiment of the present case, the rod 1 is a telescopic rod, and the telescopic rod is provided with a joint knob 11 for locking the telescopic length of the telescopic rod.

[0067] It should be noted that the telescopic rod is usually composed of an internal metal rod and an external sleeve. The metal rod is made of high-strength alloy material. The telescopic rod is provided with a joint knob 11 for locking the telescopic length of the telescopic rod. The length of the telescopic rod is locked or unlocked by rotating the joint knob 11, so that the telescopic rod can maintain the required fixed length when needed, preventing safety hazards caused by automatic extension and retraction due to external force during use.

[0068] Please refer to 1 or 2, as an optional embodiment of the present case, an anti-drop rope 12 is provided at one end of the rod 1 away from the clamp assembly 20.

[0069] It should be noted that the anti-drop rope 12 can effectively prevent the pole tool used for pit operations in nuclear power plants from accidentally falling off during use, thereby avoiding work interruptions or safety accidents caused by the falling off.

[0070] Please refer to 6, as an optional embodiment of the present case, a deformation portion 331 is provided at one end of the sleeve 33, and the deformation portion is located at the end of the sleeve 33 away from the rod 1; through the setting of the deformation portion 331, the inner diameter of the sleeve 33 can have a certain size range of adaptive changes, thereby avoiding excessive rigidity when the second clamp 3 clamps the camera and damaging the camera, which is beneficial to the protection of the clamped object.

[0071] The rod tool for pit operations in nuclear power plants in this case, with its high-strength and lightweight design, enables workers to easily inspect and apply molybdenum grease above the holes, thereby effectively avoiding or reducing radiation damage; this tool has a quick telescopic function, which is convenient for flexible switching between work and storage; the anti-drop rope 12 and / or threaded connection design prevents the tool and its parts from falling off, and has the functions of preventing itself from falling off and preventing foreign objects from falling off, thereby effectively ensuring that foreign objects cannot fall into the pit; the tool can effectively tighten the molybdenum grease brush and the camera to prevent the molybdenum grease brush and the camera from moving around and falling off during the painting and inspection process; the rod tool for pit operations in nuclear power plants can be used for cameras of various sizes and has strong adaptability.

[0072] In summary, the present invention effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rod tool for pit work in a nuclear power plant, characterized in that: include: Rods; A clamp assembly, one end of which is connected to the rod, and the other end of which is configured to clamp a molybdenum grease brush and / or a camera.

2. The rod tool for pit work in nuclear power plant according to claim 1, characterized in that: The clamp assembly includes a first clamp for clamping a molybdenum grease brush and a second clamp for clamping a camera; the first clamp and the second clamp are respectively detachably connected to the rod.

3. The rod tool for pit work in nuclear power plant according to claim 2, characterized in that: The first fixture comprises: A connecting assembly connected to the rod; A first clamping assembly connected to the connecting assembly, wherein the first clamping assembly is configured to clamp a cover plate of a molybdenum grease brush; The second clamping assembly is connected to the connecting assembly and / or the first clamping assembly; the second clamping assembly is configured to be able to clamp the rod of the molybdenum grease brush.

4. The rod tool for pit work in nuclear power plant according to claim 3, characterized in that: The connecting assembly includes a bottom plate and a connecting portion arranged on one side of the bottom plate; The first clamping assembly and the second clamping assembly are coaxially arranged; the first clamping assembly includes two first half clamps for use in conjunction with each other; the second clamping assembly includes two second half clamps for use in conjunction with each other; One of the first half clamps is fixedly disposed on the other side of the base plate, and the first half clamp is fixedly connected to the second half clamp located on the same side.

5. The rod tool for pit work in nuclear power plant according to claim 4, characterized in that: The first clamping assembly and the second clamping assembly are spaced apart in the axial direction, and the first half clamp and the second half clamp connected to each other are fixedly connected via a connecting piece.

6. The rod tool for pit work in nuclear power plant according to claim 4, characterized in that: The first clamp half and the second clamp half have different inner diameters.

7. The rod tool for pit work in a nuclear power plant according to claim 2, characterized in that: The second clamp includes a rod connector, one end of which is configured to be connectable to the rod; The other end of the connecting rod is provided with a split-petal clamp; the connecting rod is also sleeved with a sleeve for adjusting the clamping force of the split-petal clamp, and the inner ring of the sleeve is threadedly connected to the outer circumferential surface of the connecting rod.

8. The rod tool for pit work in nuclear power plant according to claim 7, characterized in that: The rod connecting piece is provided with a restraining part for restraining the camera data line.

9. The rod tool for pit work in a nuclear power plant according to claim 1, characterized in that: The rod member is a telescopic rod, and a joint knob for locking the telescopic length of the telescopic rod is provided on the telescopic rod.

10. The rod tool for pit work in a nuclear power plant according to claim 1, characterized in that: An anti-drop rope is arranged at one end of the rod away from the clamp assembly.

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