A long rod salvage

Abstract

The present invention discloses a long rod for salvage, which comprises a first long rod, a second long rod and a jaw assembly. The first long rod is arranged in the vertical direction; the second long rod is arranged in the horizontal direction, and one end of the second long rod along the axial direction is connected to the first long rod; the jaw assembly is arranged at the other end of the second long rod along the axial direction. Thus, foreign objects in the underwater or high-dose area horizontal holes of a nuclear power plant can be salvaged, preventing the foreign objects from causing failures of the pressure vessel of the nuclear power plant and ensuring the normal operation of the nuclear power plant.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of nuclear power plant pressure vessels, and particularly to a long rod for salvage. Background Art

[0002] Non-destructive testing needs to be carried out in the inner cavity of a nuclear power plant pressure vessel in a water environment. During the testing process, foreign objects often sink in the nozzle area of the inner cavity of the pressure vessel. After the testing is completed, it is necessary to remove the foreign objects that have fallen into the nozzle area. On the other hand, there are also some other horizontal hole areas in the nuclear power plant. When small parts fall into these areas, remote salvage treatment is required. Summary of the Invention

[0003] In view of this, the present invention provides a long rod for salvage, which can salvage foreign objects in the underwater or horizontal holes in the high-dose area of a nuclear power plant, avoid the nuclear power plant pressure vessel failure caused by foreign objects, and ensure the normal operation of the nuclear power plant.

[0004] An embodiment of the present invention provides a long rod for salvage, including a first long rod, a second long rod, and a jaw assembly. The first long rod is arranged in the vertical direction; the second long rod is arranged in the horizontal direction, and one end of the second long rod in the axial direction is connected to the first long rod; the jaw assembly is arranged at the other end of the second long rod in the axial direction.

[0005] Further, the long rod for salvage further includes a first right-angle joint and a second right-angle joint. The first right-angle joint is used to connect the first long rod and the second long rod, so that the second long rod is perpendicular to the first long rod; the second right-angle joint is used to connect the second long rod and the jaw assembly, so that the jaw assembly is perpendicular to the second long rod.

[0006] Further, the first long rod and / or the second long rod includes at least one connecting pipe. The two ends of the connecting pipe in the axial direction are respectively a male end and a female end; wherein, the male end and the female end are mutually matched. When the number of connecting pipes is multiple, the multiple connecting pipes are connected end to end.

[0007] Further, the connecting pipe includes a first connecting hole, a second connecting hole, and a first connecting pin. Two first connecting holes are oppositely arranged at the male end; two second connecting holes are oppositely arranged at the female end; when the male end is connected to the female end, the first connecting pin is adapted to pass through the first connecting hole and the second connecting hole, and anti-detachment pins are further arranged at both ends of the first connecting pin.

[0008] Further, the second long rod further includes an inner floating cylinder and an outer floating cylinder. A plurality of inner floating cylinders are arranged inside the second long rod; a plurality of outer floating cylinders are sleeved outside the second long rod.

[0009] Further, the long rod for salvage further includes a camera. The second right-angle joint is further provided with a first support and a second support in different directions, and the camera is connected to the first support and / or the second support.

[0010] Further, the fishing long rod further includes a hoisting assembly, and the hoisting assembly includes a lifting ring and a second connecting pin. Two third connecting holes are oppositely arranged at the bottom of the lifting ring. When the lifting ring is connected to the first long rod, the second connecting pin is adapted to pass through the third connecting hole and the first connecting hole; or when the lifting ring is connected to the first long rod, the second connecting pin is adapted to pass through the third connecting hole and the second connecting hole.

[0011] Further, the jaw assembly is driven by a gas source.

[0012] Further, the jaw assembly is connected with a flexible material layer, and the flexible material layer is provided with a serrated structure.

[0013] The beneficial effects of the technical solution provided by the embodiment of the present invention at least include: A fishing long rod includes a first long rod, a second long rod and a jaw assembly. The first long rod is arranged in the vertical direction; the second long rod is arranged in the horizontal direction, and one end of the second long rod along the axial direction is connected to the first long rod; the jaw assembly is arranged at the other end of the second long rod along the axial direction. Thus, foreign objects in the underwater or high-dose area horizontal holes of the nuclear power plant can be fished, avoiding foreign objects from causing failures of the nuclear power plant pressure vessel and ensuring the normal operation of the nuclear power plant.

[0014] Wherein, the first long rod and the second long rod are composed of a plurality of connecting pipes connected end to end. By assembling different numbers of connecting pipes, foreign objects falling at different positions can be fished; using right-angle joints to connect the first long rod, the second long rod and the jaw assembly can make the direction of the jaw assembly vertically downward, facilitating the fishing of foreign objects in the underwater or horizontal holes.

[0015] Wherein, the fishing long rod is provided with a first support and a second support in different directions for installing a camera to observe the state of the jaw assembly gripping foreign objects from two directions, reducing the operation difficulty.

[0016] Wherein, the second long rod adopts a hollow sealed structure. An inner float can be filled inside the second long rod, or an outer float can be sleeved outside the second long rod, so that the buoyancy received by the second long rod and the jaw assembly is balanced with its own gravity, keeping the second long rod in the horizontal direction during the working process.

[0017] Wherein, the jaw assembly is driven by a gas source and is set to a structure where foreign objects are not easily detached. The jaws are provided with a flexible material layer with a serrated structure, increasing the friction between the jaw assembly and foreign objects and ensuring that foreign objects are not easily detached from the jaw assembly.

[0018] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specifically gives the specific embodiments of this application. Brief Description of the Drawings

[0019] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0020] Figure 1 Fig. shows a three-dimensional structural schematic diagram of a fishing long rod provided by an embodiment of the present invention;

[0021] Figure 2 shows Figure 1 a structural schematic diagram of the fishing long rod of the shown embodiment from the first perspective;

[0022] Figure 3 shows Figure 1 a structural schematic diagram of the fishing long rod of the shown embodiment from the second perspective;

[0023] Figure 4 shows Figure 1 a structural schematic diagram of the fishing long rod of the shown embodiment from the third perspective;

[0024] Figure 5 shows Figure 4 a structural schematic diagram of area A of the shown embodiment;

[0025] Figure 6 shows Figure 1 a structural schematic diagram of the jaw assembly of the shown embodiment.

[0026] Wherein, Figures 1 to 6 the corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0027] 10 First long rod, 11 Lifting assembly, 12 Hoop, 13 Second connecting pin, 20 Second long rod, 21 Inner floating cylinder, 22 Outer floating cylinder, 30 Jaw assembly, 31 First jaw, 32 Second jaw, 33 Flexible material layer, 41 First right-angle joint, 42 Second right-angle joint, 43 Camera, 44 First support, 45 Second support, 50 Connecting pipe, 51 Male head end, 52 Female head end, 53 First connecting pin, 54 Anti-disengagement pin. Detailed Embodiments

[0028] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0030] The following refers to Figures 1 to 6 Describe the fishing long rod provided according to some embodiments of the present invention.

[0031] As Figures 1 to 4 Shown, the fishing long rod provided according to an embodiment of the present invention includes a first long rod 10, a second long rod 20, and a jaw assembly 30. The first long rod 10 is arranged in the vertical direction; the second long rod 20 is arranged in the horizontal direction, and one end of the second long rod 20 in the axial direction is connected to the first long rod 10; the jaw assembly 30 is arranged at the other end of the second long rod 20 in the axial direction. By adjusting the position of the jaw assembly 30 through the first long rod 10 and the second long rod 20, foreign objects in the underwater or high-dose area horizontal holes of the nuclear power plant can be salvaged, avoiding the failure of the nuclear power plant pressure vessel and ensuring the normal operation of the nuclear power plant.

[0032] Specifically, using the first long rod 10 can adjust the height of the jaw assembly 30, and using the second long rod 20 can adjust the horizontal distance between the jaw assembly 30 and the operator. By cooperating to adjust the clamping and opening of the jaw assembly 30, foreign objects in the underwater or high-dose area horizontal holes of the nuclear power plant can be remotely salvaged.

[0033] As Figures 1 to 2 Shown, the fishing long rod further includes a first right-angle joint 41 and a second right-angle joint 42 for connecting the first long rod 10, the second long rod 20, and the jaw assembly 30; the first right-angle joint 41 is used to connect the first long rod 10 and the second long rod 20 to make the second long rod 20 perpendicular to the first long rod 10, so that during the working process of the fishing long rod, the first long rod 10 is arranged in the vertical direction and the second long rod 20 is arranged in the horizontal direction, facilitating the adjustment of the height of the jaw assembly 30 and the horizontal distance between the jaw assembly 30 and the operator; the second right-angle joint 42 is used to connect the second long rod 20 and the jaw assembly 30 to make the jaw assembly 30 perpendicular to the second long rod 20. That is to say, the second right-angle joint 42 can ensure that the direction of the jaw assembly 30 is always vertically downward, facilitating the salvage of foreign objects in the underwater or horizontal holes from above equipment such as pressure vessels.

[0034] As Figures 1 to 3As shown, the first long rod 10 and / or the second long rod 20 includes at least one connecting tube 50, and the two ends of the connecting tube 50 along the axial direction are respectively a male end 51 and a female end 52; wherein, the male end 51 and the female end 52 match each other, and when there are multiple connecting tubes 50, the multiple connecting tubes 50 are connected end to end, and by assembling different numbers of connecting tubes 50, the length of the first long rod 10 or the second long rod 20 can be adjusted, so as to facilitate the salvage of foreign objects dropped at different positions.

[0035] Specifically, the first long rod 10 and the second long rod 20 are respectively composed of one or more connecting tubes 50. When the number of connecting tubes 50 is multiple, the male end 51 of each connecting tube 50 is connected to the female end 52 of another connecting tube 50. The male end 51 and the female end 52 are detachably connected to facilitate quick disassembly and assembly, thereby improving the salvage efficiency.

[0036] It can be understood that the connection method between the male end 51 and the female end 52 is not limited here. The two ends of the connecting tube 50 can be provided with matching internal threads and external threads, or one end of one connecting tube 50 can be clamped in another connecting tube 50, etc.; the connection direction of the connecting tube 50 is not limited here. For example, the connecting tube 50 that constitutes the first long rod 10 can have the male end 51 at the top, or the female end 52 at the top; the connecting tube 50 that constitutes the second long rod 20 can have the male end 51 close to the clamping jaw assembly 30, or the female end 52 close to the clamping jaw assembly 30.

[0037] like Figure 2 , Figure 3 and Figure 6 As shown, the connecting tube 50 includes a first connecting hole, a second connecting hole and a first connecting pin 53, which are used to connect adjacent connecting tubes 50 to avoid disconnection of the connecting tubes 50 during use; the two first connecting holes are relatively arranged at the male end 51, and the two second connecting holes are relatively arranged at the female end 52, so that when the male end 51 is connected to the female end 52, the two first connecting holes and the two second connecting holes are located on the same straight line, and the first connecting pin 53 is suitable for passing through the first connecting hole and the second connecting hole, so as to reinforce the connection between adjacent connecting tubes 50 to avoid disconnection, and at the same time, the assembly is quick and convenient.

[0038] Among them, anti-slip pins 54 are also provided at both ends of the first connecting pin 53, which can prevent the first connecting pin 53 from slipping out and causing the connecting pipe 50 to be disconnected, and further enhance the reliability of the connection between adjacent connecting pipes 50.

[0039] It is understandable that the first right-angle joint 41 and the second right-angle joint 42 are also provided with opposite connecting holes. That is to say, when using the first right-angle joint 41 to connect the first long rod 10 and the second long rod 20, and using the second right-angle joint 42 to connect the second long rod 20 and the jaw assembly 30, the connecting pin can also be passed through the connecting holes, which is convenient for disassembly and installation; anti-detachment pins 54 are provided at both ends of the connecting pin to prevent the connecting pin from detaching and ensure the reliability of the connection.

[0040] As Figure 5 shown, the second long rod 20 further includes an inner float 21 and an outer float 22. Specifically, the inner float 21 and the outer float 22 are used to adjust the buoyancy received by the second long rod 20 during underwater operation, so as to ensure that the buoyancy received by the second long rod 20 and the jaw assembly 30 is balanced with its own gravity, and further enable the second long rod 20 to maintain a horizontal state in water, which is convenient for salvage operation.

[0041] Among them, a plurality of inner floats 21 are arranged inside the second long rod 20. Specifically, the second long rod 20 adopts a hollow sealed structure, and the inner floats 21 are filled in the holes of the sealed structure of the second long rod 20. Preferably, the material of the inner float 21 is high-density foam; a plurality of outer floats 22 are sleeved outside the second long rod 20. Specifically, the outer float 22 adopts an annular structure and can be sleeved outside the second long rod 20. Preferably, the material of the outer float 22 is high-density foam.

[0042] It is understandable that the inner float 21 and / or the outer float 22 can be selectively set according to the weight of the second long rod 20, that is, only the inner float 21 can be set, or only the outer float 22 can be set, or both the inner float 21 and the outer float 22 can be set, as long as it is ensured that the buoyancy received by the second long rod 20 is balanced with the gravity during underwater operation.

[0043] As Figures 1 to 3 shown, the salvage long rod further includes a camera 43. The second right-angle joint 42 is further provided with a first support 44 and a second support 45 along different directions. The camera 43 is connected to the first support 44 and / or the second support 45, so that when the second long rod 20 enters the horizontal hole, the camera 43 can capture the actions of the jaw assembly 30 clamping foreign objects from different directions, making the observation of foreign objects clearer and reducing the clamping difficulty.

[0044] Specifically, the first support 44 and the second support 45 are connected to the directly above of the second right-angle joint 42, which can avoid interfering with the operation of the jaw assembly 30 connected below the second right-angle joint 42. The first support 44 and the second support 45 are set as curved rod-shaped structures to realize the installation of the camera 43 along different directions.

[0045] As Figure 2As shown, it can be understood that during the use of the salvage long rod, it can be operated by hand, or a crane can be used to hang the first long rod 10 and the second long rod 20 can be held by hand at the same time for operation to reduce the operation difficulty. When using a crane to hang the first long rod 10, the salvage long rod further includes a lifting assembly 11. The lifting assembly 11 includes a lifting ring 12 and a second connecting pin 13. Two third connecting holes are oppositely arranged at the bottom of the lifting ring 12 for connecting the lifting ring 12 to the first long rod 10.

[0046] Specifically, when the connecting direction of the connecting pipe 50 is such that the male head end 51 is upward, the second connecting pin 13 is adapted to pass through the third connecting hole and the first connecting hole to connect the lifting ring 12 to the first long rod 10; when the connecting direction of the connecting pipe 50 is such that the female head end 52 is upward, the second connecting pin 13 is adapted to pass through the third connecting hole and the second connecting hole to connect the lifting ring 12 to the first long rod 10.

[0047] As Figure 6 shown, the jaw assembly 30 is driven by a gas source. Specifically, the jaw assembly 30 is adjusted to reach the position of the foreign object, and the inflation and gas stop functions of the gas source are utilized to realize the clamping and opening of the first jaw 31 and the second jaw 32, so as to clamp and remove the foreign object. The jaw assembly 30 driven by the gas source is light and stable in operation and convenient to operate.

[0048] As Figure 6 shown, the first jaw 31 and the second jaw 32 can be relatively clamped or opened, so that when the jaw assembly 30 clamps the foreign object, the foreign object is not easily detached; the first jaw 31 and the second jaw 32 are also connected with a flexible material layer 33. The flexible material layer 33 is provided with a serrated structure, which can further increase the friction between the jaw assembly 30 and the foreign object during the process of clamping the foreign object, ensuring that the foreign object is not easily separated from the jaw assembly 30.

[0049] In the description of the present invention, the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship of the drawings, and are only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention; the terms "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the description of the present invention, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A salvage long rod, characterized in that, it includes: A first long rod (10), the first long rod (10) is arranged in the vertical direction; A second long rod (20), the second long rod (20) is arranged in the horizontal direction, and one end of the second long rod (20) along the axial direction is connected to the first long rod (10); A jaw assembly (30), the jaw assembly (30) is arranged at the other end of the second long rod (20) along the axial direction; The second long rod (20) further includes: Inner floating cylinders (21), a plurality of the inner floating cylinders (21) are arranged inside the second long rod (20); Outer floating cylinders (22), a plurality of the outer floating cylinders (22) are sleeved outside the second long rod (20); Wherein, the inner floating cylinders (21) and / or the outer floating cylinders (22) are selectively arranged according to the weight of the second long rod (20).

2. The salvage long rod according to claim 1, characterized in that, it further includes: A first right-angle joint (41), the first right-angle joint (41) is used to connect the first long rod (10) and the second long rod (20) so that the second long rod (20) is perpendicular to the first long rod (10); A second right-angle joint (42), the second right-angle joint (42) is used to connect the second long rod (20) and the jaw assembly (30) so that the jaw assembly (30) is perpendicular to the second long rod (20).

3. The salvage long rod according to claim 1, characterized in that, The first long rod (10) and / or the second long rod (20) includes: At least one connecting pipe (50), both ends of the connecting pipe (50) along the axial direction are respectively a male end (51) and a female end (52); Wherein, the male end (51) and the female end (52) are mutually matched, and when the number of the connecting pipes (50) is multiple, the multiple connecting pipes (50) are connected end to end.

4. The salvage long rod according to claim 3, characterized in that, The connecting pipe (50) includes: First connecting holes, two of the first connecting holes are oppositely arranged on the male end (51); Second connecting holes, two of the second connecting holes are oppositely arranged on the female end (52); A first connecting pin (53), when the male end (51) is connected to the female end (52), the first connecting pin (53) is adapted to pass through the first connecting hole and the second connecting hole, and anti-detachment pins (54) are further arranged at both ends of the first connecting pin (53).

5. The salvage long rod according to claim 2, characterized in that, it further includes: A camera (43), the second right-angle joint (42) is further provided with a first support (44) and a second support (45) in different directions, and the camera (43) is connected to the first support (44) and / or the second support (45).

6. The salvage long rod according to claim 4, characterized in that, it further includes: The lifting assembly (11) includes a lifting ring (12) and a second connecting pin (13). Two third connecting holes are oppositely arranged at the bottom of the lifting ring (12). When the lifting ring (12) is connected to the first long rod (10), the second connecting pin (13) is adapted to pass through the third connecting hole and the first connecting hole; or When the lifting ring (12) is connected to the first long rod (10), the second connecting pin (13) is adapted to pass through the third connecting hole and the second connecting hole.

7. The fishing long rod according to claim 1, characterized in that: The jaw assembly (30) is driven by a gas source.

8. The fishing long rod according to claim 1, characterized in that: The jaw assembly (30) is connected with a flexible material layer (33), and the flexible material layer (33) is provided with a serrated structure.

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