Maintenance transfer device and radioactive equipment maintenance system

Abstract

The invention discloses a maintenance transfer device and a radioactive equipment maintenance system, and the device comprises a transfer channel which extends in the horizontal direction and penetrates through the side wall of a sealing box chamber. One end of the transfer channel is provided with a transfer position, and the other end of the transfer channel is provided with a maintenance position; the transfer assembly is located in the transfer channel and comprises a traction unit and a hoisting unit, the traction unit comprises a driving end, a moving end and a traction piece, the driving end is sequentially connected with the moving end and the hoisting unit through the traction piece, the moving end can move in the length direction of the transfer channel, and the driving end and the moving end are located at the same horizontal height; the hoisting unit is located below the moving end and used for hoisting the process equipment. A clamping unit is installed on the traction piece and located between the moving end and the lifting unit. According to the maintenance transfer device, large-size and heavy-weight radioactive objects in the sealing box body can be safely and quickly transferred out of the sealing box body.

Description

Technical Field

[0001] The invention specifically relates to a maintenance and transfer device and a radioactive equipment maintenance system. Background Art

[0002] In recent years, the emphasis on environmental protection has brought opportunities and challenges to nuclear fuel reprocessing technology. The transfer of large-sized and heavy objects between the inside and outside of a closed box is a common demand in reprocessing inspection and maintenance.

[0003] As far as the prior art is concerned, the sealed chamber has a certain shielding function and is a closed carrier that can realize internal process operations. It is often equipped with large-sized and heavy process equipment and other objects. In actual production, the internal objects will be affected and radioactive. After a period of use, these process equipment need to be inspected and maintained. Considering that the sealed chamber is a sealed structure, there are certain difficulties in the later inspection and maintenance of the objects in the sealed chamber, that is, maintenance personnel cannot directly enter the sealed chamber for inspection and maintenance.

[0004] At this time, it is necessary to transfer the large-sized and heavy radioactive objects in the sealed box room out of the sealed box room and transfer them to the maintenance area for inspection and maintenance. However, the difficulty in the process of transporting process equipment is that these process equipment are large in size and weight, and are not suitable for manual transportation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a maintenance and transfer device and a radioactive equipment maintenance system in view of the above-mentioned deficiencies in the prior art. The maintenance and transfer device can safely and quickly transfer large-sized and heavy radioactive objects in a sealed box to outside the sealed box.

[0006] According to an embodiment of the first aspect of the present invention, there is provided a maintenance transfer device for transferring process equipment placed in a sealed chamber, comprising: a transfer channel and a transfer assembly; the transfer channel extends in a horizontal direction and passes through the side wall of the sealed chamber, a transfer position is provided at one end of the transfer channel, and a maintenance position is provided at the other end, the transfer position is located in the sealed chamber, the maintenance position is located outside the sealed chamber, and the transfer position in the sealed chamber is used for temporarily storing the process equipment; the transfer assembly is located in the transfer channel, the transfer assembly comprises a traction unit and a lifting unit, the traction unit comprises a driving end, a moving end and a traction member, The driving end is connected with the moving end and the lifting unit in sequence through a traction member, the moving end can move along the length direction of the transfer channel, the driving end and the moving end are at the same horizontal height, the lifting unit is located below the moving end, and is used to lift process equipment; a locking unit is installed on the traction member, and the locking unit is located between the moving end and the lifting unit; the driving end pulls up the lifting unit through the traction member, so that the locking unit is pulled up synchronously until the locking unit is locked to the moving end, thereby pulling the moving end to move along the length direction of the transfer channel, so as to drive the lifting unit and the process equipment to move from the transfer position to the maintenance position.

[0007] Preferably, the traction member is a flexible rope, the portion of the traction member located between the driving end and the moving end extends along the length direction of the transfer channel, and the portion of the traction member located between the moving end and the lifting unit extends along the vertical direction.

[0008] Preferably, the driving end includes a driving winch, and the traction unit also includes a driven wheel, and the driven wheel is located at the transfer position; the moving end is provided with a first winding part and a second winding part, and the lifting unit includes a first hook and a second hook, the first hook is located below the first winding part, and the second hook is located below the second winding part; the first hook is used to connect with the process equipment when it is necessary to transfer the process equipment from the transfer position to the maintenance position; the second hook is used to connect with the process equipment when it is necessary to transfer the process equipment from the maintenance position back to the transfer position. The two ends of the traction member are respectively set as the first hanging end and the second hanging end, the first hanging end is connected to the first hook, and the second hanging end is connected to the second hook, and the target direction is set as the extension direction extending from the first hanging end of the traction member to the second hanging end. Along the target direction, the traction member is sequentially wound around the first winding part, the driving winch, the driven wheel, and the second winding part.

[0009] Preferably, the locking unit includes a first stop block, which is connected to the traction member, and the first stop block is located between the first winding part and the first hook. The driving winch is used to retract or release the first hanging end of the traction member. When the driving winch retracts the first hanging end of the traction member, the traction member pulls up the first stop block, the first hook and the process equipment until the first stop block is engaged with the first winding part, so that the traction member can pull the moving end and the process equipment from the transfer position to the maintenance position. When the driving winch releases the first hanging end of the traction member, the traction member lowers the first hook and the process equipment, so that the process equipment is lowered to the maintenance position.

[0010] Preferably, the locking unit also includes a second stopper, which is connected to the traction member, and the second stopper is located between the second winding portion and the second hook. The driving winch is used to retract or release the second hanging end of the traction member. When the driving winch retracts the second hanging end of the traction member, the traction member pulls up the second stopper, the second hook and the process equipment until the second stopper is engaged with the second winding portion, so that the traction member can pull the moving end and the process equipment from the maintenance position back to the transfer position. When the driving winch releases the second hanging end of the traction member, the traction member lowers the second hook and the process equipment, so that the process equipment is lowered to the transfer position.

[0011] Preferably, the traction member includes a first rope segment, a second rope segment and a third rope segment, wherein the second rope segment has a first end and a second end, the first end of the second rope segment is wound around a driving winch, the second end of the second rope segment is wound around a driven pulley, one end of the first rope segment is connected to the first end of the second rope segment, and the other end is the first hanging end, the middle part of the first rope segment is wound around the first winding part, the first stopper is connected to the first rope segment, one end of the third rope segment is connected to the second end of the second rope segment, and the other end is the second hanging end, the middle part of the third rope segment is wound around the second winding part, and the second stopper is connected to the third rope segment; the driving winch is used to control the retraction and release of the first end of the second rope segment to pull up the first hanging end and the process equipment, thereby driving the process equipment to move from the transfer position to the detection position, and to control the retraction and release of the second end of the second rope segment to pull up the second hanging end and the process equipment, thereby driving the process equipment to move from the detection position to the transfer position.

[0012] Preferably, the first winding portion and the second winding portion are both rollers, the first winding portion and the second winding portion both extend along the width direction of the transfer channel, the first winding portion and the second winding portion are relatively arranged along the length direction of the transfer channel, the first winding portion is located on the side facing the detection position, and the second winding portion is located on the side facing the transfer position.

[0013] Preferably, the transfer assembly also includes a frame, which extends along the length direction of the transfer channel, with both end portions of the frame respectively located at the transfer position and the maintenance position, and the middle portion of the frame passes through the side wall of the sealed box chamber; the mobile end is slidably connected to the frame, and the frame is used to guide the mobile end so that the mobile end can move along the length direction of the transfer channel.

[0014] Preferably, the frame includes a first guide rod and a second guide rod, the first guide rod and the second guide rod both extend along the length direction of the transfer channel, and two ends of the first guide rod and the second guide rod are respectively located at the transfer position and the maintenance position, the first guide rod and the second guide rod are spaced apart along the width direction of the transfer channel, the movable end is between the first guide rod and the second guide rod, and the movable end is slidably connected to the first guide rod and the second guide rod on opposite sides in the width direction of the transfer channel, and the first guide rod and the second guide rod are used to limit the movable end so that the movable end moves along the extension direction of the guide groove.

[0015] Preferably, the transfer channel is a sealed channel; the device also includes an air tent, which is connected to the sealed chamber to form a sealed channel communicating with the sealed chamber, namely the transfer channel.

[0016] Preferably, the air tent is detachably connected to the side wall of the sealed chamber, a detection port is provided on the side wall of the sealed chamber, and the inner cavity of the air tent is connected with the inner cavity of the sealed chamber through the detection port, so that a sealed transfer channel is formed between the sealed chamber, the detection port and the inner cavity of the air tent.

[0017] Preferably, the air tent includes a supporting frame and a shielding film, wherein the shielding film is applied to the supporting frame to form a sealed cavity in the air tent, and the shielding film is provided with a connecting port on a side close to the detection door, and the connecting port is aligned with the detection port.

[0018] According to an embodiment of the second aspect of the present invention, there is provided a radioactive equipment maintenance system, comprising a sealed chamber, a transport unit and the above-mentioned maintenance and transfer device; a working position and a transfer position are arranged in the sealed chamber, the transport unit is accommodated in the sealed chamber, and is used to drive the radioactive process equipment to move back and forth between the working position and the transfer position, the working position and the transfer position are arranged along the width direction of the transfer channel; the maintenance and transfer device is used to transport the radioactive process equipment on the transfer position to the maintenance position, so that the radioactive process equipment can be inspected and maintained.

[0019] Preferably, the transport unit includes a track and a trolley, the track extends along the length direction of the transfer channel, the trolley is connected to the track and can move along the extension direction of the track, and the trolley is used to support the radioactive process equipment and drive the radioactive process equipment to move back and forth between the working position and the detection position.

[0020] The maintenance and transfer device in the present invention can form a sealed transfer channel between the sealed chamber, the detection port and the gas tent through the connection between the gas tent and the sealed chamber, that is, when the radioactive process equipment moves in the transfer channel, there will be no leakage of radioactive aerosols. When the process equipment is working normally, the detection port of the sealed chamber is in a closed state. At this time, there is no need to connect the gas tent with the detection port of the sealed chamber, and there will be no leakage of radioactive aerosols in the sealed chamber. When the process equipment needs to be inspected and maintained and the detection port is opened, leakage of radioactive aerosols will occur. Therefore, it is necessary to connect the gas tent to the sealed chamber before opening the detection port to form a sealed transfer channel to ensure that the radiation atmosphere in the sealed chamber does not leak out. Then, after the process equipment is transported to the maintenance position by the transfer assembly, the staff can wear protective clothing and directly inspect and maintain the process equipment at the maintenance position in the gas tent.

[0021] In addition, it should be noted that the transfer component of the device pulls the traction member through the driving end (i.e., the driving winch), so that the first hanging end or the second hanging end of the traction member (wire rope) is retracted, thereby realizing the lifting of the process equipment, and driving the mobile end and the process equipment to move between the transfer position and the maintenance position.

[0022] Specifically, when the process equipment needs to be repaired, the staff will hang the process equipment on the first hook. Then, the first hanging end of the wire rope is retracted through the driving end. At this time, the wire rope provides an upward pulling force to the first hook, thereby pulling up the process equipment. After the process equipment is pulled to a certain height, the first stopper is connected to the first winding part. Under the action of the first stopper, the first hook and the process equipment stop pulling. The driving end continues to retract the wire rope, that is, through the wire rope and the first stopper, a pulling force pointing to the driving end is applied to the moving end, so that the moving end can be driven to move along the length direction of the transfer channel, so that the process equipment moves from the transfer position to the maintenance position.

[0023] After the inspection is completed, the staff will hang the process equipment on the second hook, and then retract the second end of the wire rope through the driving end. At this time, the wire rope provides an upward pulling force to the second hook, thereby pulling up the process equipment. After the process equipment is pulled to a certain height, the second stopper is connected to the second winding part. Under the action of the second stopper, the second hook and the process equipment stop pulling up. The driving end continues to retract the wire rope, that is, through the wire rope and the second stopper, a pulling force directed to the driven wheel is applied to the moving end, so that the process equipment can be driven to move along the length direction of the transfer channel, so that the moving end moves from the inspection position back to the transfer position, that is, the process equipment is put back into the sealed box.

[0024] Therefore, the maintenance and transfer device can safely and quickly transfer large-sized and heavy radioactive objects in the sealed box to outside the sealed box, while ensuring that the radiation atmosphere in the sealed box does not leak to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the structure of a transport assembly in some embodiments of the present invention;

[0026] Figure 2 a is a front view of a transport assembly in some embodiments of the present invention;

[0027] Figure 2 b is a side view of a transport assembly in some embodiments of the present invention;

[0028] Figure 2 c is a top view of a transport assembly in some embodiments of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the cooperation between the transfer assembly and the sealed chamber in some embodiments of the present invention;

[0030] Figure 4 is a schematic diagram of the structure of a maintenance and transfer device in some embodiments of the present invention;

[0031] Figure 5a is a schematic structural diagram of a traction unit in some embodiments of the present invention;

[0032] Figure 5b is a schematic diagram of a traction unit in some embodiments of the present invention transferring a process device from a transfer position to a maintenance position;

[0033] Figure 5c It is a schematic diagram of a traction unit in some embodiments of the present invention transferring a process device from a maintenance position back to a transfer position.

[0034] In the figure: 1-sealed box chamber, 2-air tent, 21-support frame, 3-transfer assembly, 31-frame, 311-first guide rod, 312-second guide rod, 313-first support rod, 314-second support rod, 32-driving end, 321-winch bracket, 322-driving winch, 33-moving end, 331-first winding part, 332-moving frame, 333-second winding part, 34-traction member, 35-stop unit, 351-first stopper, 352-second stopper, 36-handling unit, 37-process equipment, 38-driven pulley, 39-hoisting unit, 391-first hook, 392-second hook. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "upstream", "downstream" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0037] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] First of all, the maintenance and transfer device in the present invention is suitable for any scenario where large-sized and heavy-weight objects need to be transferred, and is particularly suitable for the transfer of radioactive objects in and out of a closed chamber (i.e., a sealed chamber). The following is a description of the application scenario of the radioactive closed chamber of the maintenance and transfer device: In a nuclear fuel reprocessing plant, there are a large number of large-sized and heavy-weight radioactive objects, which are usually placed in a closed chamber. The closed chamber has a certain shielding function, and its interior can realize the process operation of large-sized and heavy-weight radioactive objects. In actual production, the internal objects will be affected and radioactive. After a period of use, these process equipment need to be inspected and maintained. Considering that the sealed chamber is a sealed structure, there are certain difficulties in the later inspection and maintenance of the objects in the sealed chamber, that is, maintenance personnel cannot directly enter the sealed chamber for inspection and maintenance.

[0040] At this time, it is necessary to transfer the large-sized and heavy-weight radioactive objects in the sealed box room out of the sealed box room and transfer them to the maintenance area for inspection and maintenance. At present, the transportation of large-sized and heavy-weight radioactive objects is usually achieved by heavy-duty forklifts, lifting platforms, cylinders, electric cylinders and other driving equipment. For example, electric cylinders arranged in the vertical direction are used to drive the large-sized and heavy-weight radioactive objects to lift, and electric cylinders arranged in the horizontal direction are used to drive the large-sized and heavy-weight radioactive objects to move horizontally to the target position.

[0041] However, for the sealed chamber scenario, due to the high radioactivity of the aerosol, in order to avoid the leakage of radioactive aerosol, the opening of the sealed chamber will be set very small, and heavy forklifts and other equipment cannot enter. Moreover, after completing the handling and maintenance of large-sized and heavy radioactive objects, the detection port of the sealed chamber needs to be closed as soon as possible to avoid the leakage of radioactive aerosols. Therefore, in the application scenario of the sealed chamber, the transfer device cannot occupy the detection port for a long time. For example, if an electric cylinder arranged in the horizontal direction is used to drive large-sized and heavy radioactive objects to move horizontally to the target position, the electric cylinder arranged in the horizontal direction will occupy the detection port, resulting in the inability to close the detection port. Moreover, due to the high radioactivity of the aerosol in the sealed chamber, some automated electronic control equipment may cause a decrease in accuracy or even fail to operate if placed in the sealed chamber for a long time. For example, if an electric cylinder arranged in the vertical direction is used to drive the lifting of large-sized and heavy radioactive objects, the electric cylinder needs to be placed in the sealed chamber for a long time. Under the interference of radioactive aerosols, the control accuracy will be greatly reduced and cannot meet the handling requirements. Therefore, driving equipment such as electric cylinders that are difficult to disassemble and install are not suitable for use in highly radioactive sealed chamber scenarios.

[0042] In summary, the difficulty in transporting process equipment lies in the fact that these process equipment are large in size and weight, and are not suitable for manual transportation or transportation using existing transport equipment; due to the presence of radioactivity inside the closed chamber, when the process equipment is moved out of the closed chamber, it is easy to cause leakage of radioactive aerosols in the chamber.

[0043] Example 1

[0044] See also Figure 3 and Figure 4 The present invention discloses a maintenance and transfer device, which can safely and quickly transfer large-sized and heavy radioactive objects in a sealed box to the outside of a sealed box chamber 1, while ensuring that the radiation atmosphere in the sealed box chamber 1 does not leak out. The maintenance and transfer device is used to transfer process equipment 37 placed in the sealed box chamber 1, and includes: a transfer channel and a transfer component 3.

[0045] The transfer channel extends in the horizontal direction and penetrates the side wall of the sealed chamber 1. A transfer position is provided at one end of the transfer channel, and an inspection position is provided at the other end. The transfer position is located inside the sealed chamber 1, and the inspection position is located outside the sealed chamber 1. The transfer position in the sealed chamber 1 is used to temporarily store process equipment 37. The transfer assembly 3 is located in the transfer channel. The transfer assembly 3 includes a traction unit and a lifting unit 39. The traction unit includes a driving end 32, a moving end 33, and a traction member 34. The driving end 32 is connected to the moving end 33 and the lifting unit 39 in sequence through the traction member 34. The moving end 33 can move along the length direction of the transfer channel. The driving end 32 and the moving end 33 are at the same horizontal height. The lifting unit 39 is located below the moving end 33 and is used to lift the process equipment 37. A locking unit 35 is installed on the traction member 34, and the locking unit 35 is located between the moving end 33 and the lifting unit 39. The driving end 32 pulls up the lifting unit 39 through the traction member 34, so that the locking unit 35 is pulled up synchronously until the locking unit 35 is engaged with the moving end, thereby pulling the moving end 33 to move along the length direction of the transfer channel, so as to drive the lifting unit 39 and the process equipment 37 to move from the transfer position to the maintenance position.

[0046] It should be noted that the transfer channel is a sealed channel. The device also includes an air tent 2, which is connected to the sealed chamber 1 to form a sealed channel connected to the sealed chamber 1, that is, a transfer channel. The air tent 2 is detachably connected to the side wall of the sealed chamber 1, and a detection port is provided on the side wall of the sealed chamber 1. The inner cavity of the air tent 2 is connected to the inner cavity of the sealed chamber 1 through the detection port, so that a sealed transfer channel is formed between the sealed chamber 1, the detection port and the inner cavity of the air tent 2.

[0047] The sealed chamber has a certain shielding function and is a closed carrier for realizing internal process operations. Since the sealed chamber 1 has a certain shielding function, objects such as large-sized and heavy-weight process equipment 37 are often arranged inside, and these process equipment 37 are usually used to process or produce radioactive materials. In actual production, the internal objects will be affected by the radioactive materials and become radioactive themselves. The sealed chamber 1 is a sealed structure, and its radioactivity will not leak out during the normal operation of the internal equipment. However, there will be difficulties and risks in the later inspection and maintenance of the objects in the sealed chamber 1, that is, it is necessary to transfer the large-sized and heavy-weight radioactive objects in the sealed chamber 1 out of the sealed chamber 1 and transfer them to a convenient and fast area for inspection and maintenance. The transportation of large-sized and heavy-weight objects between the inside and outside of the sealed chamber is a common handling requirement in post-processing inspection and maintenance. During the transportation of large-sized and heavy-weight objects, it is difficult for the sealed chamber 1 to continue to maintain a sealed state, which easily causes the internal radiation atmosphere to leak out.

[0048] Furthermore, an inspection door is provided at the inspection port. When the process equipment 37 in the sealed chamber 1 is in normal working condition, the inspection door is in a closed state to prevent the radioactive aerosol in the sealed chamber 1 from leaking out. However, when the process equipment 37 in the sealed chamber 1 needs to be inspected, the inspection door needs to be opened, and the radioactive process equipment 37 therein needs to be transported out of the sealed chamber 1 through the transport assembly 3, so that the staff can inspect and repair the process equipment 37.

[0049] The maintenance and transfer device is connected to the sealed chamber 1 through the air curtain 2, so that a sealed transfer channel is formed between the sealed chamber 1, the detection port and the air curtain 2, that is, when the radioactive process equipment 37 moves in the transfer channel, there will be no leakage of radioactive aerosols. Of course, when the process equipment 37 is working normally, the detection port of the sealed chamber 1 is in a closed state, and at this time, there will be no leakage of radioactive aerosols in the sealed chamber 1, so the air curtain 2 and the detection port of the sealed chamber are in a disassembled state. When the process equipment 37 needs to be inspected and maintained and the detection port is opened, in order to avoid leakage of radioactive aerosols, it is necessary to connect the air curtain 2 to the sealed chamber to form a sealed transfer channel to ensure that the radiation atmosphere in the sealed chamber 1 does not leak to the outside.

[0050] In other words, when the process equipment 37 in the sealed chamber 1 needs to be transported, the staff will connect the pre-assembled air tent 2 to the sealed chamber 1, and the side wall of the air tent 2 close to the connecting port can be sealed and connected to the side wall of the sealed chamber 1 by screws and silicone sealing rings, and the connecting port of the air tent 2 is connected to the detection port of the sealed chamber 1 to form a sealed shipping channel.

[0051] Then, after the process equipment 37 is transferred to the maintenance position by the transfer component 3, the staff can wear protective clothing and directly perform maintenance on the process equipment 37 at the maintenance position in the gas tent 2. A protective container can also be set at the maintenance position. After the process equipment 37 is transported to the maintenance position, the process equipment 37 is placed in the protective container to achieve radiation shielding of the process equipment 37. Then the protective container and the process equipment 37 are moved together to the maintenance room to perform maintenance and maintenance operations on the process equipment 37.

[0052] In the prior art, the transfer assembly 3 usually drives the lifting unit 39 to move in the horizontal direction through a translation device, and then drives the lifting unit 39 to move up and down through a lifting device to realize the functions of lifting and transferring the process equipment 37. However, the existing transfer equipment requires at least two driving devices to realize the functions of lifting and transferring, and there are problems such as occupying a large space and being inconvenient to disassemble and assemble, such as gantry cranes, mechanical arms, lifting cylinders, translation cylinders and other transfer equipment.

[0053] In the case of a radioactive sealed chamber 1, the sealed chamber 1 is usually in a closed state to avoid leakage of radioactive aerosols. When the process equipment 37 is transported and overhauled, the inspection door needs to be opened to facilitate the transport of the process equipment 37. Before opening the inspection door, the staff connects the gas tent 2 with the inspection port to form a sealed transport channel between the sealed chamber 1, the detection port and the gas tent 2 to avoid leakage of the radioactive atmosphere during the transport process. Therefore, this requires that the transport component 3 in this embodiment should be smaller so that the transport component 3 can be accommodated in the transport channel. Moreover, before transporting, the transport component 3 needs to be assembled in the transport channel, with a part of the transport component 3 in the sealed chamber 1 and the other part in the gas tent 2 to achieve the transport of the process equipment 37. After the transport of the process equipment 37 is completed, the transport equipment needs to be disassembled, and then the inspection door of the sealed chamber 1 is closed to avoid leakage of the radioactive atmosphere. Therefore, it is also necessary to consider the problem that the transport component 3 needs to be frequently disassembled when the process equipment 37 in the sealed chamber 1 is transported.

[0054] Obviously, in the existing transfer devices, the installation and disassembly processes are very cumbersome, and the existing transfer devices are relatively large in size and difficult to pass through the inspection port. Therefore, the existing transfer equipment cannot be applied to the aforementioned transportation scenario of objects in the sealed chamber 1, that is, the existing transfer equipment cannot realize the function of transferring large-sized and heavy-weight process equipment 37 out of the sealed chamber 1. In other words, considering that the sealed chamber 1 is a sealed structure, the later inspection and maintenance of the objects in the sealed chamber 1 also brings difficulties. It is necessary to transfer the large-sized and heavy-weight radioactive objects in the sealed chamber 1 out of the sealed chamber 1 and transfer them to a convenient and fast area for inspection and maintenance. However, no device for solving the above difficulties has been found in the prior art.

[0055] The maintenance and transfer device in this embodiment realizes the lifting and transfer of the process equipment 37 through the driving end 32 located outside the sealed chamber 1. Specifically, the driving end 32 can be set to drive the winch 322, or a winch, an electric hoist, etc. can be used. The mobile end 33 can use a transfer cart. The traction member 34 is a flexible rope, such as a steel wire rope. The part of the traction member 34 located between the driving end 32 and the mobile end 33 extends along the length direction of the transfer channel, and the part of the traction member 34 located between the mobile end 33 and the lifting unit 39 extends in the vertical direction. The lifting unit 39 can be connected to the process equipment 37 by a hook.

[0056] When the driving end 32 pulls up the lifting unit 39 and the process equipment 37 through the traction part 34 (wire rope), the locking unit 35 will be pulled up synchronously until the locking unit 35 is locked on the moving part; at this time, under the action of the locking unit 35, the lifting unit 39 cannot continue to be pulled up, and the vertical upward pulling force is converted into a horizontal pulling force that drives the moving end 33 to move toward the maintenance position, thereby driving the lifting unit 39 and the process equipment 37 to move from the transfer position to the maintenance position.

[0057] The advantage of using a single drive end 32 located on the outside of the sealed chamber 1 and a steel wire rope to achieve traction is that the installation is simple and there is no need to install equipment inside the sealed chamber 1. The staff only needs to install a frame 31 to guide the transfer trolley (i.e., the mobile end 33). The frame 31 extends along the length of the transfer channel and is placed through the detection port. Its two ends are respectively in the transfer position and the maintenance position, that is, one part of the frame 31 is in the sealed chamber 1, and the other part is in the air tent 2. The frame 31 can be pre-assembled and then placed by a crane or other lifting equipment. The drive winch 322 is installed at the maintenance position, which can significantly reduce the radiation impact of radioactive aerosols. The drive winch 322 is connected to the lifting unit 39 through a traction member 34.

[0058] Therefore, the maintenance and transfer device can safely and quickly transfer large-sized and heavy radioactive objects in the sealed box to the outside of the sealed box chamber 1, while ensuring that the radiation atmosphere in the sealed box chamber 1 does not leak to the outside.

[0059] See also Figure 1 and Figure 2 The transfer component 3 in this embodiment will be described in detail below.

[0060] The driving end 32 includes a driving winch 322 and a winch bracket 321. The driving winch 322 is installed on the frame 31 through the winch bracket 321 and is located at one end close to the maintenance position. The central axis of the driving winch 322 extends along the width direction of the transfer channel and can rotate around its own central axis. The width direction of the transfer channel is perpendicular to the length direction of the transfer channel. One end of the traction member 34 is wound around the circumferential surface of the driving winch 322. The driving winch 322 can retract or release the traction member 34 during the rotation process. Specifically, one end of the wire rope is wound around the circumferential surface of the driving winch 322. When the driving winch 322 rotates, the traction member 34 can be retracted or released. In the process of hoisting the process equipment 37, the staff rotates the driving winch 322 to retract the wire rope, so that the wire rope provides an upward pulling force to the process equipment 37, thereby lifting the process equipment 37.

[0061] In some embodiments, the driving winch 322 can be a manual winch. By setting the driving member (i.e., the driving winch 322) at one end near the maintenance position, the staff can drive the sending and receiving of the wire rope in the air tent 2 to achieve the lifting and transportation of the process equipment 37. The hand-cranked winch as described above is provided with a transmission mechanism such as a wire rope (i.e., a traction member 34), and a lifting mechanism (i.e., a lifting unit 39, the upper end of the wire rope is far away from the winch end, that is, the lower end of the vertical section of the wire rope) is provided at the upper end of the wire rope. Here, the lifting device can be a hook, etc., installed on the wire rope, and can be operated to achieve lifting. Further, the lifting mechanism mainly includes a grasping mechanism, etc. (the lifting mechanism can be in various forms, such as a grasping mechanism or a hook, etc.) to match the shape of the lifted object. Further, the lifting mechanism can grasp large-sized and heavy objects through the grasping mechanism, and can achieve the lifting and lowering of the lifted object. The main function of the lifting mechanism is to lift and lower after grasping. Since the structure is located in a radiation environment, the lifting of heavy objects is mainly achieved by manually operating the labor-saving device. Furthermore, the sliding crane (i.e., the mobile end 33) can achieve horizontal movement of large-sized and heavy objects inside and outside the sealed box 1 through its own labor-saving device. The labor-saving device here mainly consists of a pulley block, etc. (The labor-saving device is integrated with the handwheel of the winch)

[0062] In some other embodiments, the driving winch 322 may also be an electric winch, and the driving winch 322 is located in the air tent 2, that is, outside the sealed chamber 1. The advantage is that the radiation in the sealed chamber 1 may have an adverse effect on the sending and receiving of electrical control signals of the automatic equipment. When the driving winch 322 is an electric winch, the driving winch 322 is arranged in the air tent 2 to reduce the influence of radiation on the driving component (driving winch 322), thereby achieving more accurate control of the retraction and release of the wire rope.

[0063] See also Figure 5a , Figure 5b and Figure 5c In some embodiments, the traction unit further includes a driven wheel disc 38, and the driven wheel disc 38 is located at the transfer position. The mobile end 33 is provided with a first winding portion 331 and a second winding portion 333, and the lifting unit 39 includes a first hook 391 and a second hook 392, the first hook 391 is located below the first winding portion 331, and the second hook 392 is located below the second winding portion 333. The two ends of the traction member 34 are respectively set as the first hanging end and the second hanging end, the first hanging end is connected to the first hook 391, and the second hanging end is connected to the second hook 392. The set direction is the extending direction extending from the first hanging end of the traction member 34 to the second hanging end. Along the set direction, the traction member 34 is sequentially wound around the first winding portion 331, the driving winch 322, the driven wheel disc 38, and the second winding portion 333.

[0064] It should be noted that the first hook 391 is used to connect with the process equipment 37 when the process equipment 37 is transferred to the maintenance position. The second hook 392 is used to connect with the process equipment 37 when the process equipment 37 after maintenance is transferred back to the transfer position.

[0065] The locking unit 35 includes a first stopper 351 and a second stopper 352. The first stopper 351 is connected to the traction member 34, and the first stopper 351 is located between the first winding portion 331 and the first hook 391. The driving winch 322 is used to retract or release the first hanging end of the traction member 34. When the driving winch 322 retracts the first hanging end of the traction member 34, the traction member 34 pulls up the first stopper 351, the first hook 391 and the process equipment 37 until the first stopper 351 is engaged with the first winding portion 331, so that the traction member 34 can pull the moving end 33 and the process equipment 37 from the transfer position to the maintenance position. When the driving winch 322 releases the first hanging end of the traction member 34, the traction member 34 lowers the first hook 391 and the process equipment 37, so that the process equipment 37 is lowered to the maintenance position. The second stopper 352 is connected to the traction member 34, and the second stopper 352 is located between the second winding portion 333 and the second hook 392. The driving winch 322 is used to retract or release the second hanging end of the traction member 34. When the driving winch 322 retracts the second hanging end of the traction member 34, the traction member 34 pulls up the second stopper 352, the second hook 392 and the process equipment 37 until the second stopper 352 is engaged with the second winding portion 333, so that the traction member 34 can pull the moving end 33 and the process equipment 37 from the maintenance position back to the transfer position. When the driving winch 322 releases the second hanging end of the traction member 34, the traction member 34 lowers the second hook 392 and the process equipment 37, so that the process equipment 37 is lowered to the transfer position.

[0066] In this embodiment, the traction member 34 is a steel wire rope. Of course, the traction member 34 can also be other flexible ropes, as long as it can meet the traction strength requirements of the process equipment 37 in the shielding box room. In general, the steel wire rope is a loop as a whole, and the driving winch 322 can realize the forward and reverse operation of the steel wire rope through forward and reverse rotation.

[0067] like Figure 5b As shown, when the process equipment 37 needs to be repaired, the process equipment 37 is connected to the first hook 391, the winch 322 is driven to rotate forward, the wire rope runs forward, and the first hook 391 and the process equipment 37 are driven to rise until the locking unit 35 (first stopper 351) is locked to the mobile end 33, and the wire rope drives the transfer trolley (i.e., the mobile end 33) and the process equipment 37 to move to the maintenance position through the locking unit 35. When the transfer trolley is transferred to the maintenance position, the winch 322 is driven to reverse, the wire rope runs in the reverse direction, and under the action of the gravity of the process equipment 37, the process equipment 37 is placed under the maintenance position. The process of transferring the process equipment 37 to the maintenance position is completed.

[0068] like Figure 5c As shown, after the overhaul is completed, when the process equipment 37 needs to be put back into the sealed chamber 1, the process equipment 37 is connected to the second hook 392, driving the winch 322 to reverse, and the wire rope runs in the reverse direction, driving the overhauled process equipment 37 to rise to the second stopper 352 of the locking unit 35 to be engaged with the mobile end 33, and the wire rope continues to run in the reverse direction, driving the mobile end 33 and the process equipment 37 to move toward the sealed chamber 1. When the transfer vehicle is transferred to the transfer position, the winch 322 is driven to rotate forward, and under the action of the gravity of the process equipment 37, the process equipment 37 is lowered to the transfer position. The entire overhaul and transfer process of the process equipment 37 is completed.

[0069] The lifting unit 39 may be a hook or claw. Further, a lifting part is provided on the process equipment 37, and the lifting part is adapted to the shape of the lifting unit 39. The lifting part may be a lifting ring or a lifting ear, as long as it can be adapted to the shape of the lifting unit 39 to achieve the lifting of the process equipment 37.

[0070] The advantage of the transfer component 3 is that it can lift the process equipment 37 and move the process equipment 37 back and forth horizontally by a steel wire rope. It has a simple structure and is easy to operate. Moreover, the assembly process of the transfer component 3 is also very simple.

[0071] More specifically, the traction member 34 includes a first rope segment, a second rope segment and a third rope segment, wherein the second rope segment has a first end and a second end, the first end of the second rope segment is wound around the driving winch 322, and the second end of the second rope segment is wound around the driven pulley 38. One end of the first rope segment is connected to the first end of the second rope segment, and the other end is the first hanging end, the middle part of the first rope segment is wound around the first winding portion 331, the first stopper 351 is connected to the first rope segment, one end of the third rope segment is connected to the second end of the second rope segment, and the other end is the second hanging end, the middle part of the third rope segment is wound around the second winding portion 333, and the second stopper 352 is connected to the third rope segment. The driving winch 322 is used to control the retraction and extension of the first end of the second rope segment to pull up the first hanging end and the process equipment 37, thereby driving the process equipment 37 to move from the transfer position to the detection position, and to control the retraction and extension of the second end of the second rope segment to pull up the second hanging end and the process equipment 37, thereby driving the process equipment 37 to move from the detection position to the transfer position.

[0072] In some embodiments, the first winding portion 331 and the second winding portion 333 are both rollers, and the first winding portion 331 and the second winding portion 333 both extend along the width direction of the transfer channel. The first winding portion 331 is located on the side facing the detection position, and the second winding portion 333 is located on the side facing the transfer position. The first winding portion 331 and the second winding portion 333 are relatively arranged along the length direction of the transfer channel.

[0073] In this embodiment, the first winding part 331 and the second winding part 333 are both set as cylindrical rollers, which can facilitate the movement of the wire rope relative to the circumferential surface of the winding part. Taking the first rope segment of the wire rope as an example, the part of the first rope segment located between the driving end 32 and the first winding part 331 is set as the first part, the part of the first rope segment located between the first winding part 331 and the first hook 391 is set as the second part, the second block 352 is installed on the second part of the first rope segment, and the part of the wire rope wound on the first winding part 331 (roller) is set as the winding section, the first part extends along the length direction of the transfer channel, and the second part extends in the vertical direction. The first part is connected to the second part through the winding section. The tension of the wire rope is always applied along the extension direction of the wire rope. By winding the winding section on the cylindrical roller, the direction of the tension can be turned, that is, the horizontal tension of the first part is converted into the vertical tension of the second part. When the stopper on the second part is engaged with the roller shaft, the tension on the wire rope directly acts on the roller shaft, thereby pulling the roller shaft to move along the extension direction of the frame 31 to realize the movement of the process equipment 37 between the transfer position and the maintenance position.

[0074] The working principle between the third rope segment and the second winding portion 333 is similar to this, and will not be described in detail here.

[0075] In the process of lifting the process equipment 37, the staff hangs the hook (lifting unit 39) on the lifting ear (lifting part) on the process equipment 37, and then retracts the wire rope (traction member 34) through the driving end 32, so that the wire rope provides an upward pulling force to the process equipment 37, thereby lifting the process equipment 37. It should be noted that the winding part is cylindrical, that is, its cross section is circular, and the winding part can adopt a roller, a roller, a roller shaft, etc. The middle part of the wire rope is wound on the circumferential surface of the winding part. When the driving end 32 drives the traction member 34 to be retracted, the driving end 32 applies a horizontal pulling force to the first part of the traction member 34. At the beginning, the wire rope can produce relative displacement with the winding part, that is, the horizontal pulling force is converted into an upward pulling force in the vertical direction through the winding part, so that the lifting unit 39 and the process equipment 37 can be lifted. After the wire rope pulls the lifting unit 39 and the process equipment 37 to a certain height, the block on the second part of the wire rope is connected to the winding part (roller) of the moving end 33. At this time, the wire rope can no longer convert the horizontal tension into vertical tension through the winding part, but directly applies the horizontal tension to the winding part. Therefore, after the process equipment 37 is lifted to a certain distance, the wire rope can directly pull the moving assembly and the process equipment 37 to move along the length direction of the transfer channel.

[0076] Please continue reading Figure 1 and Figure 2 a. Figure 2 b. Figure 2 c. In some embodiments, the mobile end 33 can adopt a transfer cart. The transfer assembly 3 also includes a frame 31. The transfer assembly 3 also includes a frame 31, and the frame 31 extends along the length direction of the transfer channel. The two end portions of the frame 31 are respectively in the transfer position and the maintenance position, and the middle part of the frame 31 passes through the side wall of the sealed box chamber 1. In other words, the middle part of the frame 31 passes through the detection port. The mobile end 33 is slidably connected to the frame 31, and the frame 31 is used to guide the mobile end 33 so that the mobile end 33 can move along the length direction of the transfer channel.

[0077] The transfer trolley includes a moving frame 332 , which is connected to the frame 31 and can move along the extension direction of the frame 31 . The first winding portion 331 and the second winding portion 333 are respectively installed on both sides of the moving frame 332 .

[0078] In this embodiment, by providing the frame 31, the mobile end 33 (i.e., the transfer vehicle) can be guided so that the transfer vehicle can move along the length direction of the transfer channel. By guiding the mobile end 33, it is possible to avoid path misalignment of the wire rope during operation and to avoid the transfer vehicle from tipping over, which would result in the transfer process being unable to proceed.

[0079] Specifically, the frame 31 includes a first guide rod 311 and a second guide rod 312, both of which extend along the length direction of the transfer channel, and the two ends of the first guide rod 311 and the second guide rod 312 are respectively located at the transfer position and the maintenance position. The first guide rod 311 and the second guide rod 312 are arranged at intervals along the width direction of the transfer channel. The movable end 33 is located between the first guide rod 311 and the second guide rod 312, and the movable end 33 is slidably connected to the first guide rod 311 and the second guide rod 312 on opposite sides in the width direction of the transfer channel, respectively, and the first guide rod 311 and the second guide rod 312 are used to limit the movable end 33 so that the movable end 33 moves along the extension direction of the guide groove.

[0080] In this embodiment, by setting two guide rods, the moving end 33 (transfer trolley) can be guided more stably. Moreover, the transfer position is located at the end of the first guide rod 311 and the second guide rod 312 extending into the sealed box chamber 1, and is located between the first guide rod 311 and the second guide rod 312. The first guide rod 311 and the second guide rod 312 of the frame 31 are arranged at intervals along the width direction of the transfer channel. The advantage of such an arrangement is that a channel position can be reserved for the trolley (i.e., the mobile component) to lift the process equipment 37 and drive the process equipment 37 to move, thereby avoiding the frame 31 from occupying too much space in the transfer channel.

[0081] The frame 31 also includes a first support rod 313 and a second support rod 314. The first support rod 313 is in the sealed box chamber 1, and the second support rod 314 is in the air tent 2. The first support rod 313 and the second support rod 314 both extend in the vertical direction. The second support rod 314 is longer than the first support rod 313. The lower end of the first support rod 313 is connected to the bottom of the sealed box chamber 1, and the upper end is connected to the guide rod to support the part of the guide rod in the sealed box chamber 1. The lower end of the second support rod 314 is connected to the bottom of the inner cavity of the air tent 2, and the upper end is connected to the guide rod to support the part of the guide rod in the air tent 2. The first support rod 313 and the second support rod 314 cooperate to support the guide rod so that the guide rod remains horizontal.

[0082] It should be noted that the height of the first support rod 313 is adapted to the height from the bottom of the sealed chamber 1 to the upper edge of the detection port, that is, the length of the first support rod 313 needs to enable the upper end of the guide rod to abut against the upper edge of the detection port. The length of the second support rod 314 needs to be adapted to the height from the installation ground of the air tent 2 to the upper edge of the detection port. The advantage of this arrangement is that the guide rod can be kept in a horizontal state, thereby facilitating the transportation of the process equipment 37 by the trolley (i.e., the mobile unit).

[0083] When installing the transfer unit, the staff will place the pre-assembled transfer unit into the transfer channel. During the installation of the transfer unit, the staff only needs to align one end of the first support rod 313 of the frame 31 with the detection port, put the part of the frame 31 close to the first support rod 313 into the density chamber, so that the first support rod 313 abuts against the bottom of the sealed chamber 1, and the installation of the transfer unit can be completed without too much cumbersome operation.

[0084] In summary, the transfer component 3 of the maintenance transfer device pulls the traction member 34 through the driving end 32, and then lifts the process equipment 37 through the traction member 34, and drives the moving end 33 and the process equipment 37 to move between the transfer position and the maintenance position.

[0085] like Figure 5a , Figure 5b and Figure 5c As shown, when the process equipment 37 needs to be repaired, the staff will hang the process equipment 37 on the first hook 391. Then, the first hanging end of the wire rope is retracted through the driving end 32, and the wire rope provides an upward pulling force to the first hook 391, thereby lifting the lifting unit 39 and the process equipment 37. After the process equipment 37 is pulled to a certain height, the first stopper 351 in the middle of the wire rope is clamped on the roller shaft, and under the action of the stopper, the lifting unit 39 and the process equipment 37 stop. The driving end 32 continues to retract the wire rope, that is, through the wire rope and the stopper, the pulling force in the length direction of the transfer channel is applied to the moving end 33, so that the wire rope can be driven to move along the length direction of the transfer channel, so that the moving end 33 (transfer trolley) and the process equipment 37 are moved from the transfer position to the maintenance position. The same applies to the opposite direction.

[0086] See also Figure 4 In this embodiment, the air tent 2 includes a support frame 21 and a shielding film. The shielding film is attached to the support frame 21 to form a sealed cavity in the air tent 2. The shielding film has a connecting port on the side close to the detection door, and the connecting port is aligned with the detection port. Specifically, the shielding film can be made of materials such as polyethylene (Polypropylene) or polypropylene (Polypropylene). These plastic materials have good transparency and flexibility, can effectively block radioactive aerosols, and provide visibility so that operators can clearly see the working area.

[0087] Further, the support frame 21 includes a first side bracket and a second side bracket, and the first side bracket and the second side bracket are respectively located on both sides of the frame 31. The first side bracket includes a first horizontal support rod and a first vertical support rod, and the second side bracket includes a second horizontal support rod and a second vertical support rod. The number of the first vertical support rod and the second vertical support rod is multiple, the number of the first vertical support rod and the second vertical support rod is the same, and the first vertical support rod and the second vertical support rod are respectively arranged in pairs, and the multiple pairs of the first vertical support rod and the second vertical support rod are arranged at intervals along the length direction of the transfer channel. The first horizontal support rod and the second horizontal support rod both extend along the length direction of the transfer channel, the first horizontal support rod is connected to the upper ends of the multiple first vertical support rods, and the second horizontal support rod is connected to the upper ends of the multiple second vertical support rods; the first side bracket and the second side bracket are connected by a connecting rod, which extends along the width direction of the transfer channel, one end of the connecting rod is connected to the first horizontal support rod, and the other end is connected to the second horizontal support rod.

[0088] The overall working process of the maintenance and transfer device in this embodiment is described below by way of example:

[0089] The trolley maintenance and transportation device specifically includes a frame 31, a lifting unit 39, a traction unit, and a simple detachable sealing device (air tent 2). The lifting unit 39 includes a first hook 391 and a second hook 392. The traction unit includes: a hand-cranked winch (driving winch 322), a winch mounting assembly (winch bracket 321), a sliding trolley (i.e., a moving end 33), a wire rope (traction member 34), and a driven wheel 38.

[0090] The frame 31 extends along the length of the transfer channel, and the two ends of the frame 31 are respectively located at the transfer position and the maintenance position, and the middle of the frame 31 passes through the detection port on the side wall of the sealed box chamber 1. Figure 1 and Figure 3 As shown, the mobile end 33 is slidably connected to the frame 31, and the frame 31 is used to guide the mobile end 33 so that the mobile end 33 can move along the length direction of the transfer channel.

[0091] The moving end 33 is provided with a first winding part 331 and a second winding part 333, which are arranged opposite to each other along the length direction of the transfer passage. The first winding part 331 and the second winding part 333 are both rollers, and the first winding part 331 and the second winding part 333 both extend along the width direction of the transfer passage.

[0092] The driving winch 322 and the driven wheel 38 are both mounted on the vehicle frame 31, wherein the winch device is located at one end of the vehicle frame 31 close to the maintenance position, and the driven wheel 38 is located at one end of the vehicle frame 31 close to the transfer position. The winch device includes a driving winch 322 and a winch bracket 321, and the driving winch 322 is mounted on the vehicle frame 31 through the winch bracket 321. The driving winch 322 is connected to the moving end 33 and the driven wheel 38 through a traction member 34. The traction member 34 is a steel wire rope, and the set direction is the extending direction extending from the first hanging end of the traction member 34 to the second hanging end. Along the set direction, the traction member 34 is sequentially wound around the first winding portion 331, the driving winch 322, the driven wheel 38 and the second winding portion 333.

[0093] The traction member 34 includes a first rope segment, a second rope segment and a third rope segment, which are connected in sequence. The first rope segment is wound around the first winding portion 331 of the mobile end 33 and connected to the first hook 391 of the lifting unit 39; one end of the second rope segment is wound around the driving winch 322 and connected to the first rope segment, and the other end of the second rope segment is wound around the driven wheel 38 and connected to the third rope segment; the third rope segment is wound around the second winding portion 333 of the mobile end 33 and connected to the second hook 392 of the lifting unit 39.

[0094] The driving winch 322 controls the retraction or release of the second rope segment by forward or reverse rotation. Specifically, when the process equipment 37 needs to be transferred from the transfer position to the maintenance position, the staff connects the first hook 391 to the process equipment 37 to be transferred. Then, the driving winch 322 rotates forward (clockwise), and the first end of the second rope segment is retracted, and the first end of the second rope segment is the end close to the first rope segment, so that the first rope segment is subjected to the tensioning force directed to the driving winch 322, thereby lifting the first hook 391 and the process equipment 37 to be transferred. At the same time, the second end of the second rope segment is gradually released, and the second end of the second rope segment is the end close to the third rope segment. As the second end of the second rope segment is gradually released, the second hook 392 of the lifting unit 39 will gradually move downward under the action of gravity to keep the traction member 34 in a tensioned state. A first stopper 351 is installed on the first rope segment, and the first stopper 351 is located below the first winding portion 331. The first stopper 351 will move upward as the first rope segment is pulled up until it is clamped on the first winding portion 331 of the mobile end 33. At this time, the first rope segment is still subjected to the tension directed to the driving winch 322, but due to the action of the first stopper 351, the first rope segment cannot continue to move relative to the first winding portion 331, but is converted to drive the transfer trolley (i.e., the mobile end 33) to move horizontally toward the maintenance position synchronously. When the first winding portion 331 of the mobile end 33 moves to the top of the maintenance position, the driving winch 322 is reversed, so that the process equipment 37 is lowered to the maintenance position.

[0095] In addition, when the process equipment 37 is overhauled and needs to be transported from the overhaul position to the transfer position, the staff can connect the second hook 392 to the process equipment 37 to be transferred. Then, the winch 322 is driven to reverse (counterclockwise), and the second end of the second rope segment is retracted, so that the third rope segment is subjected to the tensioning force directed to the driven wheel 38, thereby lifting the second hook 392 and the process equipment 37 to be transferred. At the same time, the first end of the second rope segment is gradually released. As the first end of the second rope segment is gradually released, the first hook 391 of the lifting unit 39 will gradually move downward under the action of gravity to keep the traction member 34 in a tensioned state. A second stopper 352 is installed on the third rope segment. The second stopper 352 is located below the second winding portion 333. The second stopper 352 will move upward as the first rope segment is pulled up until it is clamped on the second winding portion 333 of the moving end 33. At this time, the third rope segment is still subjected to the tension force directed to the driven wheel 38, but due to the action of the second stopper 352, the third rope segment cannot continue to move relative to the second winding portion 333, but is converted to drive the transfer trolley (i.e., the mobile end 33) to move horizontally toward the transfer position synchronously. When the second winding portion 333 of the mobile end 33 moves to just above the transfer position, the winch 322 is driven to rotate forward, so that the process equipment 37 is lowered to the maintenance position.

[0096] The traction unit further comprises a tensioning device connected to the second rope segment and used for keeping the traction member 34 in a tensioned state at all times.

[0097] The air tent 2 is composed of a support frame 21 welded from steel pipes, and a plastic film is applied to the outside to form a sealed plastic film cavity, which is similar to the shape of a tent, and the plastic film applied to the outside is a transparent film. The sliding trolley is slidably arranged on the frame 31. The winch mounting assembly is arranged at one end of the frame 31 close to the maintenance position, and the hand winch is installed on the winch mounting assembly. The hand winch as described above is provided with a conducting mechanism such as a wire rope, and the hand winch is connected to the sliding trolley by a wire rope. One end of the frame 31 extends into the sealed chamber 1, and the rest is arranged in a simple detachable sealing device (air tent 2) outside the chamber, and the movement of the sliding trolley inside and outside the sealed chamber 1 can be realized by the hand winch.

[0098] When it is necessary to transfer the process equipment 37 in the sealed chamber 1, the pre-assembled air tent 2 needs to be connected to the sealed chamber 1. The side wall of the air tent 2 close to the connecting port can be sealed and connected to the side wall of the sealed chamber 1 by screws and silicone sealing rings. The connecting port of the air tent 2 is connected to the detection port of the sealed chamber 1 to form a sealed shipping channel. The staff places the pre-assembled transfer unit into the transfer channel. In the process of installing the transfer unit, the staff only needs to align one end of the first support rod 313 of the frame 31 with the detection port, and put the part of the frame 31 close to the first support rod 313 into the density chamber so that the first support rod 313 abuts against the bottom of the sealed chamber 1. The installation of the transfer unit can be completed without too much cumbersome operation.

[0099] In other words, the staff will horizontally move the large-sized and heavy-weight objects in the sealed chamber 1 to a fixed position inside the sealed chamber 1 (a handling unit 36 ​​for transferring process equipment 37 is provided in the sealed chamber 1, and the fixed position is the maintenance position), and set up a sealed air tent 2 on the outside of the fixed position in advance. After the air tent 2 is set up, the maintenance door installed on the outside of the sealed box body is opened. At this time, the sealed box body and the sealed air tent 2 are connected together, and the atmosphere in the sealed box body only diffuses into the sealed air tent 2, ensuring that the atmosphere in the sealed box body does not diffuse over a large area. The maintenance and transfer device (transfer component 3) is assembled in the sealed air tent 2, and the sliding trolley end is extended into the sealed box body, and the other parts are located in the sealed air tent 2.

[0100] Then, the staff connects the lifting device (hook) to the large-sized and heavy-weight object, and the wire rope drives the lifting device to lift the object. The hand-cranked winch shakes, and the lifting device performs an upward movement. After moving to a certain height, it starts to perform horizontal movement. The hand-cranked winch drives the sliding trolley to perform horizontal movement more easily through the labor-saving device, and transfers the large-sized and heavy-weight object from the sealed box chamber 1 to the sealed air tent 2 outside the sealed box chamber 1. One end of the wire rope is connected to the lifting device. When the lifting device rises or falls to a certain position, the block fixed in advance on the wire rope will drive the trolley to move. At this time, it will no longer perform lifting and lowering movements but will change to horizontal movements. The same principle applies in the reverse direction.

[0101] In summary, the beneficial effects of the maintenance and transfer device in this embodiment are as follows:

[0102] 1. It can realize the transportation of large-sized and heavy objects in the sealed box chamber 1. After the objects arrive at the designated location, the objects are lifted and raised to a certain height through the lifting mechanism;

[0103] 2. The trolley can be transported inside and outside the box by hand winch, labor-saving device and wire rope traction sliding trolley;

[0104] 3. By setting up a simple detachable sealing device (air tent 2, etc.) outside the lifting port of the sealed chamber 1, it can be achieved that during the object lifting process, the radiation atmosphere in the sealed chamber 1 will always be guaranteed not to leak to the outside.

[0105] Example 2

[0106] See also Figure 3 and Figure 4 The present invention further discloses a radioactive equipment maintenance system, including a sealed box chamber 1, a transport unit 36 ​​and a maintenance transfer device in an embodiment.

[0107] The sealed chamber 1 is provided with a working position and a transfer position, and the transport unit 36 ​​is accommodated in the sealed chamber 1, and is used to drive the radioactive process equipment 37 to move back and forth between the working position and the transfer position, and the working position and the transfer position are arranged along the width direction of the transfer channel. The maintenance transfer device is used to transfer the radioactive process equipment 37 on the transfer position to the maintenance position, so that the radioactive process equipment 37 can be inspected and maintained.

[0108] Specifically, the transport unit 36 ​​includes a track and a trolley. The track extends along the length direction of the transfer channel. The trolley is connected to the track and can move along the extension direction of the track. The trolley is used to support the radioactive process equipment 37 and drive the radioactive process equipment 37 to move back and forth between the working position and the detection position.

[0109] When it is necessary to inspect and repair the process equipment 37 in the sealed chamber 1, the staff first moves the large-sized and heavy-weight object in the sealed chamber 1 horizontally to the fixed position (i.e., the inspection position) of the sealed chamber 1 through the handling unit 36 ​​in the sealed chamber 1. Then, the staff connects the lifting device (hook) with the large-sized and heavy-weight object, drives the lifting device with a steel wire rope, lifts the object, and shakes the hand-cranked winch. The lifting device performs an upward movement. After moving to a certain height, it starts to perform horizontal movement. The hand-cranked winch (i.e., the driving end 32) drives the sliding trolley (i.e., the moving end 33) through the labor-saving device to perform horizontal movement more easily, and transfers the large-sized and heavy-weight object from the sealed chamber 1 to the sealed air tent 2 outside the sealed chamber 1. When the lifting device rises or falls to a certain position, the block fixed in advance on the steel wire rope will drive the trolley to move. At this time, it will no longer perform a lifting movement but a horizontal movement, so that the lifted process equipment 37 can be transferred to the inspection position.

[0110] In summary, the radioactive equipment maintenance system has the following advantages by adopting the maintenance and transfer device in the embodiment: the maintenance and transfer device is easy to disassemble and assemble, and the operation during the transfer process is convenient, which can reduce the leakage of radiation atmosphere.

[0111] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A maintenance and transfer device for transferring process equipment (37) placed in a sealed chamber (1), characterized in that: include: Transport channels and transport components (3); The transfer channel extends in the horizontal direction and penetrates the side wall of the sealed chamber (1); a transfer position is provided at one end of the transfer channel, and an inspection position is provided at the other end; the transfer position is located inside the sealed chamber (1), and the inspection position is located outside the sealed chamber (1); the transfer position inside the sealed chamber (1) is used for temporarily storing the process equipment (37); The transfer assembly (3) is located in the transfer channel. The transfer assembly (3) comprises a traction unit and a lifting unit (39). The traction unit comprises a driving end (32), a moving end (33) and a traction member (34). The driving end (32) is connected to the moving end (33) and the lifting unit (39) in sequence through the traction member (34). The moving end (33) can move along the length direction of the transfer channel. The driving end (32) and the moving end (33) are at the same horizontal height. The lifting unit (39) is located below the moving end (33) and is used to lift the process equipment (37). A locking unit (35) is installed on the traction member (34), and the locking unit (35) is located between the moving end (33) and the lifting unit (39); The driving end (32) pulls up the lifting unit (39) and the process equipment (37) through the traction member (34), so that the locking unit (35) is pulled up synchronously until the locking unit (35) is engaged with the moving end (33), thereby pulling the moving end (33) to move along the length direction of the transfer channel, so as to drive the lifting unit (39) and the process equipment (37) to move from the transfer position to the maintenance position.

2. The device according to claim 1, characterized in that The traction member (34) is a flexible rope, and the portion of the traction member (34) located between the driving end (32) and the moving end (33) extends along the length direction of the transfer channel, and the portion of the traction member (34) located between the moving end (33) and the lifting unit (39) extends in the vertical direction.

3. The device according to claim 2, characterized in that The driving end (32) includes a driving winch (322), and the traction unit also includes a driven wheel disc (38), and the driven wheel disc (38) is located at the transfer position; The movable end (33) is provided with a first winding portion (331) and a second winding portion (333); the lifting unit (39) comprises a first hook (391) and a second hook (392); the first hook (391) is located below the first winding portion (331), and the second hook (392) is located below the second winding portion (333); The first hook (391) is used to connect with the process equipment (37) when the process equipment (37) is transferred to the maintenance position; the second hook (392) is used to connect with the process equipment (37) when the process equipment (37) after maintenance is transferred back to the transfer position; The two ends of the traction member (34) are respectively set as a first hanging end and a second hanging end, the first hanging end is connected to a first hanging hook (391), and the second hanging end is connected to a second hanging hook (392). The set direction is an extending direction extending from the first hanging end of the traction member (34) to the second hanging end. Along the set direction, the traction member (34) is sequentially wound around the first winding portion (331), the driving winch (322), the driven wheel (38) and the second winding portion (333).

4. The device according to claim 3, characterized in that The locking unit (35) comprises a first stopper (351), the first stopper (351) is connected to the traction member (34), the first stopper (351) is located between the first winding portion (331) and the first hook (391), and the driving winch (322) is used to retract or release the first hanging end of the traction member (34). When the driving winch (322) retracts the first hanging end of the traction member (34), the traction member (34) pulls up the first stopper (351), the first hook (391) and the process equipment (37) until the first stopper (351) is engaged with the first winding portion (331), so that the traction member (34) can pull the movable end (33) and the process equipment (37) from the transfer position to the maintenance position; when the driving winch (322) releases the first hanging end of the traction member (34), the traction member (34) lowers the first hook (391) and the process equipment (37), so that the process equipment (37) is lowered to the maintenance position.

5. The device according to claim 4, characterized in that The locking unit (35) further comprises a second stopper (352), the second stopper (352) being connected to the traction member (34), the second stopper (352) being located between the second winding portion (333) and the second hook (392), and the driving winch (322) being used for retrieving or releasing the second hanging end of the traction member (34). When the driving winch (322) retracts the second hanging end of the traction member (34), the traction member (34) pulls up the second stop block (352), the second hook (392) and the process equipment (37) until the second stop block (352) is engaged with the second winding portion (333), so that the traction member (34) can pull the movable end (33) and the process equipment (37) from the maintenance position back to the transfer position. When the driving winch (322) releases the second hanging end of the traction member (34), the traction member (34) lowers the second hook (392) and the process equipment (37), so that the process equipment (37) is lowered to the transfer position.

6. The device according to claim 5, characterized in that The traction member (34) comprises a first rope segment, a second rope segment and a third rope segment, wherein the second rope segment has a first end and a second end, the first end of the second rope segment is wound around a driving winch (322), and the second end of the second rope segment is wound around a driven wheel disc (38). One end of the first rope segment is connected to the first end of the second rope segment, and the other end is the first hanging end. The middle part of the first rope segment is wound on the first winding part (331), and the first stopper (351) is connected to the first rope segment. One end of the third rope segment is connected to the second end of the second rope segment, and the other end is the second hanging end. The middle part of the third rope segment is wound on the second winding part (333), and the second stopper (352) is connected to the third rope segment. The driving winch (322) is used to control the retraction and extension of the first end of the second rope segment to pull up the first hanging end and the process equipment (37), thereby driving the process equipment (37) to move from the transfer position to the detection position, and to control the retraction and extension of the second end of the second rope segment to pull up the second hanging end and the process equipment (37), thereby driving the process equipment (37) to move from the detection position to the transfer position.

7. The device according to claim 3, 4, 5 or 6, characterized in that The first winding portion (331) and the second winding portion (333) are both rollers, and the first winding portion (331) and the second winding portion (333) both extend along the width direction of the transfer channel. The first winding portion (331) and the second winding portion (333) are arranged relatively to each other along the length direction of the transfer channel, and the first winding portion (331) is located on the side facing the detection position, and the second winding portion (333) is located on the side facing the transfer position.

8. The device according to claim 2, characterized in that The mobile end (33) is a transfer trolley, and the transfer assembly (3) further comprises a frame (31), the frame (31) extends along the length direction of the transfer channel, the two end portions of the frame (31) are respectively located at the transfer position and the maintenance position, and the middle portion of the frame (31) penetrates the side wall of the sealed box chamber (1); The movable end (33) is slidably connected to the frame (31), and the frame (31) is used to guide the movable end (33) so that the movable end (33) can move along the length direction of the transfer channel.

9. The device according to claim 8, characterized in that The frame (31) comprises a first guide rod (311) and a second guide rod (312), wherein the first guide rod (311) and the second guide rod (312) both extend along the length direction of the transfer passage, and two ends of the first guide rod (311) and the second guide rod (312) are respectively located at a transfer position and an inspection position. The first guide rod (311) and the second guide rod (312) are arranged at intervals along the width direction of the transfer channel. The movable end (33) is located between the first guide rod (311) and the second guide rod (312). The movable end (33) is slidably connected to the first guide rod (311) and the second guide rod (312) on opposite sides in the width direction of the transfer channel. The first guide rod (311) and the second guide rod (312) are used to limit the movable end (33) so that the movable end (33) moves along the extension direction of the guide groove.

10. The device according to claim 1, characterized in that The transfer channel is a sealed channel; The device further comprises an air tent (2), wherein the air tent (2) is connected to the sealed chamber (1) and is used to form a sealed passage communicating with the sealed chamber (1), namely the transfer passage.

11. The device according to claim 10, characterized in that The air tent (2) is detachably connected to the side wall of the sealed chamber (1); a detection port is provided on the side wall of the sealed chamber (1); the inner cavity of the air tent (2) is connected to the inner cavity of the sealed chamber (1) through the detection port, so that a sealed transfer channel is formed between the sealed chamber (1), the detection port and the inner cavity of the air tent (2).

12. The device according to claim 11, characterized in that The air tent (2) comprises a supporting frame (21) and a shielding film, wherein the shielding film is applied to the supporting frame (21) so that a sealed cavity is formed in the air tent (2), and the shielding film is provided with a connecting port on a side close to the detection door, and the connecting port is aligned with the detection port.

13. A radioactive equipment maintenance system, characterized in that: It comprises a sealed box chamber (1), a handling unit (36) and the maintenance and transfer device according to any one of claims 1 to 12; The sealed chamber (1) is provided with a working position and a transfer position, the transport unit (36) is accommodated in the sealed chamber (1) and is used to drive the radioactive process equipment (37) to move back and forth between the working position and the transfer position, and the working position and the transfer position are arranged along the width direction of the transfer channel; The maintenance and transfer device is used to transfer the radioactive process equipment (37) at the transfer position to the maintenance position, so that the radioactive process equipment (37) can be inspected and maintained.

14. The system according to claim 13, characterized in that The transport unit (36) comprises a track and a trolley, wherein the track extends along the length direction of the transfer channel, and the trolley is connected to the track and can move along the extension direction of the track. The trolley is used to support the radioactive process equipment (37) and drive the radioactive process equipment (37) to move back and forth between the working position and the detection position.

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