A jumper, a method of dismounting and mounting, and a facility

Abstract

The application discloses a jumper pipe, which comprises a pipe body and a connecting mechanism, the pipe body is provided with a first pipe section at both ends and a second pipe section in the middle, the connecting mechanism is arranged at the port of the first pipe section and used for butting and tightly sealing the first pipe section on a pipe to be connected, and the second pipe section is an axial telescopic pipe section, which can compensate the pressing stroke of the connecting mechanism and the axial deviation of the first pipe section and the pipe to be connected. The jumper pipe has simple and reasonable structure, low precision requirement and convenient operation, and can be replaced through a remote operation mechanism. The application further provides a jumper pipe dismounting and mounting method and a radioactive waste treatment facility.

Description

TECHNICAL FIELD

[0001] The present application relates to a cross-over pipe, a dismounting and mounting method and a facility. BACKGROUND

[0002] At present, for the problem of high-level radioactive waste liquid treatment, glass solidification technology is mainly used, such as high-level waste liquid glass solidification treatment facility. Since the design life of some core equipment is much lower than that of the whole glass solidification facility, such equipment is required to be replaced by remote operation in a radioactive environment. When the equipment is remotely replaced, the pipe connected with the equipment needs to be disconnected first, and then the equipment is remotely replaced. After the equipment is replaced, the pipe is connected.

[0003] In the above process, a cross-over pipe is needed to connect the pipes to be connected on both sides of the equipment. In the current project, a quick connector and an ordinary cross-over pipe are used for connection. For the case of using a quick connector, only small-diameter pipes can be used in this form due to the specification of the quick connector. Although the ordinary cross-over pipe can be connected to large-diameter pipes, the interchangeability requirements (installation positioning accuracy, equipment manufacturing accuracy, etc.) of the equipment (the pipes to be connected) are very high. When both of the two equipment to be connected have installation errors, it is difficult to connect through such a cross-over pipe.

[0004] And for high-level waste liquid glass solidification treatment facilities, the operator cannot directly operate as in the conventional butt joint mode, but needs to operate remotely, which undoubtedly further increases the difficulty of connecting the pipes to be connected, and the error between the pipes to be connected also sharply increases the difficulty of remote operation. SUMMARY

[0005] The technical problem to be solved by the present application is to solve the above-mentioned deficiencies in the prior art, and to provide a cross-over pipe which is simple and reasonable in structure, has low precision requirements,

[0006] is convenient to operate and can be replaced by a remote operation mechanism. The present application also provides a cross-over pipe dismounting and mounting method and a radioactive waste treatment facility.

[0007] The present application provides a cross-over pipe, comprising a pipe body and a connecting mechanism, both ends of the pipe body are hard first pipe sections, the middle part is a second pipe section, the connecting mechanism is arranged at the port of the first pipe section, and is used for butt joint and compression sealing of the first pipe section on the pipe to be connected, the second pipe section is an axial telescopic pipe section, which compensates for the compression stroke of the connecting mechanism and the axial deviation of the first pipe section and the pipe to be connected.

[0008] Further, the second pipe section is a flexible bellows to compensate radial deviation, angular deviation and axial deviation of the two pipelines to be connected by radial deformation, deflection and axial extension.

[0009] Further, a first flange is arranged at the port of the pipeline to be connected, the outer surface of the first flange is a slope surface gradually expanding towards the first pipe section, the connecting mechanism is sleeved at the outside of the port of the first pipe section at one end and clamps the pipeline to be connected at the other end, and the clamping surface formed after the abutting surfaces of the two ends abut against each other is a through hole coaxial with the first pipe section to make the connecting mechanism move gradually along the slope surface of the first flange to the side of the pipeline to be connected and press the first pipe section against the pipeline to be connected during clamping.

[0010] Further, the clamping surface is a slope surface matching the outer surface of the first flange.

[0011] Further, the connecting mechanism comprises clamping petals, a mounting seat and a pulling mechanism, the clamping petals are provided with at least two pieces, connected to the mounting seat by the pulling mechanism, each piece of the clamping petals can move relatively, and the abutting surfaces abut against each other to form the clamping surface, and the pulling mechanism is used to pull each piece of the clamping petals to open or clamp.

[0012] Further, the clamping petals are provided with three pieces, two movable clamping petals are hingedly connected to the other piece of the clamping petals, the pulling mechanism comprises a screw rod and two nuts, the two nuts are connected to the two movable clamping petals respectively and are sleeved with the screw rod through opposite screw threads, the screw rod is rotatably connected to the mounting seat, and the rotation of the screw rod drives the two nuts to drive the two movable clamping petals to open around the hinged point and simultaneously push the clamping petals to move and open, or the rotation of the screw rod drives the two nuts to drive the two movable clamping petals to clamp around the hinged point and simultaneously pull the clamping petals to move and reset.

[0013] Further, a second flange is arranged at the port of the first pipe section, the second flange protrudes radially from the surface of the first pipe section to form a stepped shaft at the port of the first pipe section, one end of the clamping surface towards the first pipe section is a stepped hole matching the port of the first pipe section, so that when the two pieces of the clamping petals abut against each other, one end of the clamping surface is clamped by the stepped surface of the stepped hole and the other end cooperates with the first flange to make the connecting mechanism move gradually along the slope surface of the first flange to the side of the pipeline to be connected and drive the second flange to press against the first flange.

[0014] Further, the mounting seat is divided into two parts, the two parts are connected by fasteners, and the abutting surfaces form a through hole clamping and fixing the first pipe section after abutting.

[0015] Further, a groove is arranged on the surface of the second flange towards the pipeline to be connected to embed a connecting sealing gasket.

[0016] Further, the connecting mechanism is provided with a positioning pin arranged along the axial direction of the first pipe segment, and the pipe to be connected is provided with a supporting disc, which is provided with a clamping groove for supporting the positioning pin to complete the initial positioning of the cross-over pipe.

[0017] Further, the cross-over pipe further comprises a lifting device, and the two first pipe segments are each provided with a lifting point, and the lifting device is detachably connected to the lifting points and can drive the lifting points to relatively approach or move away to realize the extension and contraction of the pipe body, so as to connect the two pipes to be connected.

[0018] Further, the lifting device comprises a lifting arm, a supporting rod, a supporting block and a central shaft, the supporting block is provided with two, one of which is rotatably connected to the top of the central shaft, and the other is connected to the bottom of the central shaft through a threaded pair, the lifting arm is provided with two, the top end of each is hingedly connected to the supporting block at the top of the central shaft, the bottom end of each is detachably connected to the lifting point on the first pipe segment, and the middle part of each is hingedly connected to the supporting block at the bottom of the central shaft through the supporting rod, so that the lifting of the supporting block is realized through the rotation of the central shaft, and the opening and closing of the two lifting arms is realized through the supporting rod, thereby realizing the extension and contraction of the pipe body.

[0019] Further, the lifting point of the first pipe segment is provided with a connecting part, the connecting part comprises a connecting column and a connecting sheet, the connecting column is connected between the first pipe segment and the connecting sheet, the lifting device comprises an adapter, the adapter is provided with a hook-shaped strip-shaped groove, the width of the strip-shaped groove is greater than the diameter of the connecting column and less than the width of the connecting sheet, and one end of the strip-shaped groove extends to the edge of the adapter to form an opening, so as to allow the connecting column to enter and exit the strip-shaped groove to realize detachable connection.

[0020] The application also provides a dismounting and mounting method of the cross-over pipe, which comprises the following mounting steps for mounting the cross-over pipe between the two pipes to be connected:

[0021] The pipe body is contracted to a set length through remote operation;

[0022] The pipe body with the connecting mechanism is lifted to between the two pipes to be connected and is extended to be connected with the two pipes to be connected through remote operation;

[0023] The first pipe segment is pressed and connected to the pipe to be connected through remote operation of the connecting mechanism.

[0024] Further, the method further comprises the following dismounting steps for dismounting the cross-over pipe between the two pipes to be connected:

[0025] The connection between the first pipe segment and the pipe to be connected is released through remote operation of the connecting mechanism;

[0026] The pipe body is contracted to a set length through remote operation;

[0027] The pipe body with the connecting mechanism is lifted away from the two pipes to be connected by remote operation.

[0028] The application also provides a radioactive waste treatment facility, which comprises a ceramic electric smelting furnace, a radioactive waste liquid feeding pipe, a glass bead feeding pipe and the cross pipe.

[0029] The cross pipe of the application adopts a hard first pipe section and a telescopic second pipe section to form the pipe body, and the first pipe section is arranged at both ends and the second pipe section is arranged in the middle. The structure layout is reasonable, the hard structure is adopted at the butt joint position of both ends, so it is not only convenient to set the connecting mechanism, but also convenient to automatically operate the butt joint, avoiding the problem of difficult fixation caused by flexible deformation. The telescopic structure is adopted at the middle position, compared with the traditional hard structure, it is not only more convenient to install, avoiding the friction or interference between the both ends of the pipe body and the end face of the pipe to be connected, but also can effectively compensate the axial deviation caused by production and installation. At the same time, due to the telescopic second pipe section, the first pipe section and the pipe to be connected can be sealed and connected in a pressing manner after butt joint, the telescopic allowance can compensate the length change of the pipe body caused by pressing stroke, compared with the traditional additional sealing connecting component, the sealing connection mode is simpler, and it can more reliably and effectively ensure the sealing effect due to the simplicity.

[0030] In addition, the simple, reliable and reasonable layout cross pipe structure can be realized by automatic operation equipment, and the whole adopts pure mechanical structure without additional driving. Due to its pure mechanical structure, automatic operation and simple and reliable sealing effect, it can be applied to high radioactive waste liquid treatment and other nuclear facilities with high requirements. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic diagram of the cross pipe in embodiment 1 of the application;

[0032] Figure 2 is a structure schematic diagram of the cross pipe and the pipe to be connected in embodiment 1 of the application;

[0033] Figure 3 is a side schematic diagram of the connecting mechanism of the cross pipe in embodiment 1 of the application;

[0034] Figure 4 is another side opening schematic diagram of the connecting mechanism of the cross pipe in embodiment 1 of the application;

[0035] Figure 5 is a cross-sectional view of the connecting mechanism of the jumper pipe in Embodiment 1 of the present application;

[0036] Figure 6 is a schematic view of the lifting tool structure of the jumper pipe in Embodiment 1 of the present application.

[0037] In the figure: 1, pipe body; 11, first pipe section; 111, second flange; 112, sealing gasket; 113, connecting portion; 12, second pipe section; 2, connecting mechanism; 21, clamping petal; 211, clamping surface; 22, mounting seat; 23, pulling mechanism; 231, screw rod; 232, nut; 24, positioning pin; 3, pipe to be connected; 31, first flange; 32, support disc; 4, lifting tool; 41, lifting arm; 42, support rod; 43, support block; 44, central shaft; 45, adapter; 451, strip-shaped groove; 46, handle; 47, nut; 48, limiting block. DETAILED DESCRIPTION

[0038] The technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the devices or elements referred to must be provided with a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In the description of the present application, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection", "arrangement", "installation", "fixation", and the like should be understood broadly, for example, can be fixedly connected or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0042] Embodiment 1

[0043] As Figure 1 and Figure 2As shown, the cross-over pipe of the embodiment comprises a pipe body 1 and a connecting mechanism 2, the pipe body 1 has a rigid first pipe segment 11 at both ends and a second pipe segment 12 in the middle, the connecting mechanism 2 is arranged at the port of the first pipe segment 11 for butt joint and compression sealing of the first pipe segment 11 on the pipe to be connected 3, and the second pipe segment 12 is an axially telescopic pipe segment to compensate the compression stroke of the connecting mechanism 2 and the axial deviation of the first pipe segment 11 and the pipe to be connected 3.

[0044] The cross-over pipe of the embodiment combines the rigid first pipe segment 11 and the telescopic second pipe segment 12 to form the pipe body 1, and the first pipe segment 11 is arranged at both ends and the second pipe segment 12 is arranged in the middle, which is a reasonable structure layout. The butt joint position at both ends adopts a rigid structure, so it is not only convenient to arrange the connecting mechanism 2, but also convenient to automatically operate butt joint, avoiding the difficulty of fixation caused by flexible and easy deformation. The middle position adopts a telescopic structure, which is more convenient to install compared with the traditional rigid structure, avoiding friction or interference between the both ends of the pipe body 1 and the end face of the pipe to be connected 3, and effectively compensating the axial deviation caused by production and installation. At the same time, due to the arrangement of the telescopic second pipe segment 12, the first pipe segment 11 and the pipe to be connected 3 can be sealed and connected in a compression mode after butt joint, and the telescopic allowance can compensate the length change of the pipe body 1 caused by the compression stroke. Compared with the traditional additional sealing connection component, the sealing connection mode is simpler, and it is more reliable and effective to ensure the sealing effect due to its simplicity.

[0045] In addition, such a simple, reliable and reasonable layout cross-over pipe structure can be realized by automatic operation equipment, and the whole adopts a pure mechanical structure without additional driving, so the possibility of being affected by the environment is low. Due to its pure mechanical structure, automatic operation and simple and reliable sealing effect, it can be applied to high radioactive waste liquid treatment and other nuclear facilities with high requirements.

[0046] In the embodiment, the second pipe segment 12 is further selected as a flexible bellows to compensate the radial deviation, angle deviation and axial deviation of the two pipes to be connected 3 through radial deformation, deflection and axial telescoping. The bellows design displacement is ≥32mm and the cycle number is ≥1000.

[0047] In the embodiment, the first flange 31 is arranged at the port of the pipeline 3, and the outer surface of the first flange 31 is a slope surface gradually expanding in the direction of the first pipe section 11. One end of the connecting mechanism 2 is sleeved outside the port of the first pipe section 11, and the other end clamps the pipeline 3 to be connected. The clamping ends are abutted against each other to form a clamping surface 211, which is a through hole coaxial with the first pipe section 11, so that the connecting mechanism 2 moves along the slope surface of the first flange 31 to the side of the pipeline 3 to be connected and the first pipe section 11 is pressed against the pipeline 3 to be connected during clamping. The slope surface and the clamping surface 211 are combined together to realize clamping and pressing. During clamping, the diameter of the clamping surface 211 gradually contracts and moves along the slope surface to a position with smaller diameter on the first flange 31, so that the pressing action is automatically completed. Through the ingenious structure, two actions are completed by one operation. The pressing action does not need an additional operation mechanism and an additional operation control system. The structure is simplified, and the operation steps are also simplified, which is more suitable for remote operation equipment.

[0048] In the embodiment, the clamping surface 211 is a slope surface matched with the outer surface of the first flange 31, which is more convenient for moving along the slope surface during clamping. The matched slope surfaces are more closely connected and reliable.

[0049] In the embodiment, as shown in Figures 3 to 5 The connecting mechanism 2 includes clamping petals 21, a mounting seat 22 and a pulling mechanism 23. The clamping petals 21 are connected to the mounting seat 22 by the pulling mechanism 23 and can move relative to each other. The abutted surfaces of the clamping petals 21 are abutted against each other to form the clamping surface 211. The pulling mechanism 23 is used to pull the clamping petals 21 to open or clamp. When the clamping petals 21 are opened, the clamping surface 211 is divided into arc segments on the side walls of the clamping petals 21, and the clamping function is not formed, so that the connecting mechanism 2 and the pipeline 3 to be connected can be separated from each other. When the clamping petals 21 are clamped, the arc segments on the side walls of the clamping petals 21 are abutted against each other to form the clamping surface 211, so that the pipeline 3 to be connected is clamped.

[0050] In the embodiment, the clamping petals 21 are provided with three pieces, two movable clamping petals 21 are hingedly connected to the other connecting clamping petal 21, specifically, the connecting clamping petal 21 is located at the top of the two movable clamping petals 21, the two movable clamping petals 21 are symmetrically arranged along the symmetry axis of the connecting clamping petal 21, and the side walls of the three are provided with arc segments for splicing to form the clamping surface 211; the hinged position of the two movable clamping petals 21 is located at the top end of the movable clamping petal 21, so that the first flange 31 is realized to enter and exit through the lower opening when opening and closing. The pulling mechanism 23 includes a screw rod 231 and a nut 232, the nut 232 is provided with two, which are connected to the two movable clamping petals 21 respectively, and are connected to the screw rod 231 through opposite screw threads. The screw rod 231 is rotatably connected to the mounting seat 22, and the rotation of the screw rod 231 drives the nut 232 to drive the two movable clamping petals 21 to open around the hinge point, and at the same time, the movable clamping petal 21 pushes the connecting clamping petal 21 to move and open (during the movement of the nut 232, the rotation of the movable clamping petal 21 around the hinge point makes the connecting clamping petal 21 and the screw rod 231 increase the distance to realize the opening), or the rotation of the nut 232 drives the two movable clamping petals 21 to clamp around the hinge point, and at the same time, the movable clamping petal 21 pulls the connecting clamping petal 21 to move and reset. The opposite screw threads make the two nuts 232 move in opposite directions, i.e. move towards each other or move away from each other during the rotation of the screw rod 231, so as to realize the clamping and opening of the clamping petals 21.

[0051] In the embodiment, the port of the first pipe segment 11 is provided with a second flange 111, the second flange 111 protrudes from the surface of the first pipe segment 11 in the radial direction, so that the port of the first pipe segment 11 forms a stepped shaft, and the large diameter section of the stepped shaft faces the side of the pipe to be connected 3. One end of the clamping surface 211 towards the first pipe segment 11 is a stepped hole matched with the port of the first pipe segment 11, so that when the clamping petals 21 are mutually butted, one end of the clamping surface 211 is clamped by the stepped surface of the stepped hole and clamps the second flange 111, and the other end cooperates with the first flange 31, so that the connecting mechanism 2 moves gradually to the side of the pipe to be connected 3 along the slope surface of the first flange 31, and drives the second flange 111 to be pressed to the first flange 31. Thus, the axial positioning of the first pipe segment 11 is realized through the contact of the second flange 111 and the stepped hole, so as to avoid the sealing failure caused by the backward shrinkage of the first pipe segment 11 during the pressing process.

[0052] Therefore, the butt joint surface of each clamping petal 21 for forming the clamping surface 211 is provided with a concave groove, as shown in Figure 5 The side wall near the first flange 31 in the groove is a slope surface matched with the outer surface of the first flange 31, and the side wall near the second flange 111 is a vertical surface to match and limit the stepped surface formed by the second flange 111. The inner surface of the through hole formed after the butt joint of the clamping petals 21 is a special-shaped structure hole connected with the circular column structure after the circular table structure.

[0053] In this embodiment, the mounting seat 22 is divided into two parts, which are connected by fasteners (screws). After the connection, the two parts have a gap of more than 1mm. The abutting surface forms a through hole (with a gap) that clamps and fixes the first pipe segment 11. The through hole is coaxial with the clamping surface 211 hole to ensure that the first pipe segment 11 is coaxial with the pipe to be connected 3.

[0054] In this embodiment, the second flange 111 has a groove on the surface facing the pipe to be connected 3, which is used to embed the connecting sealing gasket 112. The sealing gasket 112 can be used to seal the sealing joint of the abutting surface of the first flange 31 and the second flange 111, to further improve the compression sealing effect.

[0055] In this embodiment, as shown in Figure 2 The connecting mechanism 2 is provided with a positioning pin 24 arranged along the axis of the first pipe segment 11. The positioning pin 24 protrudes from the surface of the connecting mechanism 2 facing the pipe to be connected 3. The pipe to be connected 3 is provided with a support disc 32, which is provided with a clamping groove for holding the positioning pin 24 to complete the initial positioning of the cross-over pipe. This cooperation structure can complete the initial abutting positioning before clamping, reducing the abutting difficulty and precision requirement.

[0056] In this embodiment, the hinge position of the two movable clamping petals 21 is located at the top end, so that the first flange 31 is inserted and removed through the lower opening when opening and closing. This structure is more convenient for hoisting and abutting of the cross-over pipe. When the cross-over pipe is hoisted into position, the positioning pin 24 is positioned on the support disc 32, and the first flange 31 is also inserted into the clamping end of the connecting mechanism 2 from the opening.

[0057] In this embodiment, as shown in Figure 6 The cross-over pipe also includes a lifting device 4. The two first pipe segments 11 are each provided with a lifting point. The lifting device 4 can be detachably connected to each lifting point and can relatively approach or move away from each lifting point to realize the extension and contraction of the pipeline body 1, so as to connect the two pipes to be connected 3.

[0058] In this embodiment, the lifting device 4 includes lifting arms 41, support rods 42, support blocks 43, and a central shaft 44. The support blocks 43 are provided with two, one of which is rotatably connected to the top of the central shaft 44, and the other is connected to the bottom of the central shaft 44 through a threaded pair. The lifting arms 41 are provided with two, the top ends of which are hingedly connected to the support blocks 43 on the top of the central shaft 44, and the bottom ends are respectively detachably connected to the lifting points on the two first pipe segments 11. The middle parts are respectively hingedly connected to the support blocks 43 at the bottom of the central shaft 44 through the support rods 42, so as to realize the lifting of the support blocks 43 through the rotation of the central shaft 44, and thus drive the two lifting arms 41 to open and close through the support rods 42, to realize the extension and contraction of the pipeline body 1.

[0059] The setting structure can realize the extension and contraction through single position operation, that is, the extension and contraction of the pipeline body 1 can be realized by only operating the rotation of the central shaft 44, without the need of setting operation devices on two positions of the pipeline body 1 and then controlling the two operation devices to move close or away, which not only simplifies the operation structure, but also is more convenient to operate.

[0060] In the embodiment, the lengths of the two hoisting arms 41 are related to the relative positions between the two pipelines 3 connected by the cross connection pipe, that is, related to the inclination angle when the pipeline body 1 is in the connection position. Specifically, when the central shaft 44 of the hoist 4 is in the vertical position, the connecting line of the bottom ends of the two hoisting arms 41 is parallel to the connecting line of the two pipelines 3 to be connected, so as to ensure that the pipeline body 1 can be connected to the pipelines 3 to be connected in a consistent angle direction.

[0061] In the embodiment, the hoisting point of the first pipe section 11 is provided with a connecting part 113, the connecting part 113 includes a connecting column and a connecting sheet, the connecting column is connected between the first pipe section 11 and the connecting sheet, the hoist 4 includes an adapter 45, the adapter 45 is provided with a hook-shaped strip-shaped groove 451, the width of the strip-shaped groove 451 is greater than the diameter of the connecting column and less than the width of the connecting sheet, one end of the strip-shaped groove 451 extends to the edge of the adapter 45 to form an opening, so as to allow the connecting column to enter and exit the strip-shaped groove 451 to realize detachable connection, and the connecting sheet is limited to prevent it from being pulled out in the horizontal direction.

[0062] Specifically, the strip-shaped groove 451 includes two vertical sections with one long and one short, the top ends of the long vertical section and the short vertical section are flush and connected through an arc-shaped section, the bottom end of the long vertical section extends to the edge of the adapter 45 to form an opening, the connecting column of the connecting part 113 enters the strip-shaped groove 451 from the opening, moves upward along the long vertical section, and then enters the short vertical section through the arc-shaped section to complete the limiting connection, and reversely moves out of the opening when disengaging.

[0063] In general, the embodiment can be used in the field of radioactive waste treatment technology, and specifically relates to a flexible cross connection pipe which can be replaced at a long distance. For the connection of large-diameter pipelines which need to be disconnected and connected at a long distance, the embodiment provides a new connection method. According to the characteristics of the extension and contraction of the bellows, the bellows is connected with the pipe sections at both ends, so as to effectively realize the long-distance replacement of the equipment. That is, the flexible cross connection pipe has a wider adjustment range, is convenient to operate, has good sealing effect, and can be replaced at a long distance in a radioactive environment. The cross connection pipe can be replaced (installed and removed) at a long distance through tools such as a power hand, a master-slave manipulator, and an electric wrench.

[0064] The cross connection pipe of the embodiment specifically includes:

[0065] The pipeline body 1 includes a first pipe segment 11 and a second pipe segment 12, which can also be respectively referred to as a connecting pipe and a bellows according to structural features. The bellows can be further provided with a protective sleeve. The bellows and the protective sleeve form a telescopic sleeve structure. The protective sleeve is a rigid structure, one end of which is connected to the first pipe segment 11 on one side, and the other end is open, without affecting the telescopic and deformation of the internal bellows. The first pipe segment 11 is provided with a connecting part 113, which is a base connected with the lifting device 4.

[0066] The connecting mechanism 2, which can also be referred to as a chuck connector according to structural features, includes a clamping petal 21, i.e., a chuck, a mounting seat 22 (divided into upper and lower parts, connected by screws, which can be referred to as a chuck jaw disc), a positioning pin 24 (in the shape of a long cylinder), and a pulling mechanism 23 (including a nut 232 and a screw rod 231, used for connecting a first flange 31 and a second flange 111 (which can also be respectively referred to as an external flange and a cross flange). The positioning pin 24 can achieve support of the to-be-connected pipeline on the cross pipe, and also can achieve positioning of the to-be-connected pipeline and the cross pipe.

[0067] The lifting device 4 comprises a central shaft 44, a supporting block 43, a lifting arm 41, a limiting block 48, a supporting rod 42 and a connector. The central shaft 44 can be provided with a limiting block 48 at the top and bottom of the stroke of the bottom supporting block 43. A handle 46 can be provided at the top of the lifting device 4. A nut 47 can be provided at the top of the central shaft 44 for easy operation. In this embodiment, the contraction or extension to the set length is controlled in a manner. First, during the debugging process, the supporting block 43 at the lower part of the central shaft 44 moves downward by rotating the nut 47. When the jumper pipe connected by the lifting arm 41 is contracted to the required set length (here, the first set length after contraction is convenient for hoisting and installation), the lower limiting block 48 is screwed to fit with the supporting block 43 (referring to the supporting block 43 at the lower part of the central shaft 44, the same below), and the lower limiting block 48 is spot welded. When the nut 47 is rotated in the opposite direction, the supporting block 43 moves upward to the upper limiting block 48. When the jumper pipe is extended to the required set length (here, the second set length after extension can be connected with the two side pipes 3 to be connected), the upper limiting block 48 is screwed to fit with the supporting block 43, and the upper limiting block 48 is spot welded. In this way, the movement range of the supporting block 43 is determined. Then, during the use of the working condition, the nut 47 is rotated to the maximum torque, and the maximum contraction length and extension length can be adjusted for remote operation and processing. That is, after the debugging is completed, the position of the limiting block 48 is finally determined. The central shaft 44 is provided with limiting blocks 48 on both sides of the supporting block 43 at the bottom. The positions of the limiting blocks 48 on both sides correspond to the positions of the central shaft 44 at the stroke of the supporting block 43 at the bottom when the pipe body 1 is pulled by the lifting arm 41 to contract to the first set length and to extend to the second set length. The connecting mechanism 2 and the first pipe segment 11 and the second pipe segment 12 constitute the jumper pipe body. The connecting part 113 is fixed on the first pipe segment 11. The lifting device 4 is connected with the connecting part 113 through the connector 45 to control the extension and contraction of the jumper pipe.

[0068] The main function of the connecting mechanism 2 (chuck connector) is to connect and fix and press the external flange. The main part is the chuck, which comprises an upper chuck cone (i.e. a connecting clamping petal 21) and left and right chuck cones (i.e. movable clamping petals 21). The upper chuck cone is hingedly connected to the left and right chuck cones through a middle connecting piece (which can be a pin shaft). The inner surface is designed as a tapered surface with a certain slope, which cooperates with the external flange surface. When the chuck is closed, the three chuck cones tightly hold the external flange from three directions. When the chuck is opened, the upper chuck cone moves upward, and the two side chuck cones move to the two sides respectively. The left and right chuck cones are respectively provided with nuts rotating in opposite directions and are connected with screw rods through threads. By rotating the screw rod, the nuts can be moved to the middle or to the two sides at the same time, and the chuck connector can be closed and opened at the same time.

[0069] The jumper flange (first flange 31) can be provided with a structure containing a long neck on one side, which is welded with the pipe body of the pipe to be connected 3.

[0070] The chuck connector further comprises a cross flange having an inner groove, and a sealing gasket 112 is arranged in the inner groove. The chuck connector further comprises a chuck jaw disc (an upper and lower mounting seat 22) for connecting the cross pipe and the chuck connector. The chuck jaw disc is divided into an upper part and a lower part, and the upper part and the lower part are connected by screws and the cross flange is fixed. The chuck jaw disc is provided with a positioning pin 24, and the positioning pin 24 is connected to the chuck, that is, the positioning pin 24 penetrates the chuck.

[0071] The telescopic sleeve has two functions. One is to adjust the length of the cross pipe. When the telescopic sleeve is elongated, the flanges at both ends of the cross pipe are pressed tightly, so that the sealing of the pipe after installation is ensured. The other function is to adjust or compensate for the deviation caused by the installation of the equipment. The telescopic sleeve contains a bellows, which is welded to the first pipe section 11 at both ends.

[0072] The lifting tool 4 has a connecting rod structure, and mainly functions to lift the cross pipe and adjust the elongation and shortening of the telescopic sleeve. The screw nut 47 in the structure of the lifting tool 4 is connected to the central shaft 44 by screws, and the bottom support block 43 is connected to the central shaft 44 by threads. Meanwhile, the central shaft 44 is provided with two limiting blocks 48, which serve as the upper and lower limits. The lifting arm 41 and the support rod 42 form a connecting bracket, which is a rod-shaped bracket. The long rod and the short rod are connected by screws. In addition, the long rod, as the end of the lifting arm 41, is provided with an adapter 45, which has a hook-shaped strip-shaped groove 451 and can be connected to the base. By rotating the screw nut 47, the central shaft 44 is rotated, and the bottom support block 43 moves downward or upward, and at the same time, the short rod and the long rod are retracted to the center or expanded outward.

[0073] The lifting tool 4 is provided with a handle 46, which is convenient for the power hand to grab. When the lifting tool 4 is lifted, the central shaft 44 is vertically downward, and the main body of the cross pipe has a certain inclination angle. In the design, the lengths of the long rod and the short rod are adjusted so that the inclination angle is the same as the angle of the corresponding pipe.

[0074] The cross pipe of the embodiment can realize the cutting and connection of the pipe connected to the remote replacement equipment, has a larger adjustment range, and can meet the pipe connection of the equipment in a larger installation deviation range, including length deviation and axial deviation. The interfaces such as the screw nut and the lifting point are designed in pairs, and the remote replacement can be completed by tools such as the power hand, the master-slave manipulator, and the electric wrench in the hot cell. The cross pipe and the lifting tool are designed by connecting rods, so that when the cross pipe is lifted, the angle is the same as the installation angle of the pipe. The thread travel of the central shaft of the lifting tool is limited, so that the telescopic sleeve works within the designed range. During installation, the cross pipe can be remotely positioned. The cross pipe is a pure mechanical structure and can be reliably used in a radioactive environment.

[0075] Embodiment 2

[0076] The jumper pipe dismounting and mounting method of the embodiment comprises the following mounting steps for mounting the jumper pipe in the embodiment 1 between the two side pipes 3 to be connected:

[0077] The pipe body 1 is contracted to a set length by remote operation;

[0078] The pipe body 1 with the connecting mechanism 2 is hoisted by remote operation to between the two side pipes 3 to be connected and is extended to butt joint with the two side pipes 3 to be connected;

[0079] The first pipe segment 11 is pressed and connected on the pipe 3 to be connected by remote operation of the connecting mechanism 2.

[0080] The remote operation can select a power hand, an electric wrench and the like, and in combination with the specific structure in the embodiment 1, the mounting step can be further specified as:

[0081] The electric wrench is carried by the power hand, the screw rod 231 in the chuck connector is screwed, the two clamping petals 21 are completely opened, as shown in Figure 4 , then the nut 47 of the lifting appliance 4 is rotated to shorten the distance of the jumper pipe until the jumper pipe is shortened to the first limit position (the shortest position or the length position convenient for installation, which can be calculated in advance and the limit block 48 is arranged on the central shaft 44 to determine, which is specifically shown in the embodiment 1), and

[0082] The lifting appliance 4 of the jumper pipe is lifted by the power hand, the jumper pipe is placed above the installation position (at this time, the lifting point and the center of gravity of the power hand are on the same vertical line, the posture of the lifting appliance is as shown in Figure 6 , the inclination angle of the jumper pipe is the same as the inclination angle of the pipe to be connected), then it is slowly lowered, the positioning pins 24 on both sides of the jumper pipe are completely placed on the pipe support disc 32, and the lifting appliance 4 is released; in the process, the master-slave manipulator can be used to assist the jumper pipe to be installed at the accurate position;

[0083] The nut 47 of the lifting appliance 4 is rotated by the power hand carrying the electric wrench to elongate the distance of the jumper pipe until the jumper pipe is elongated to the second limit position (the longest position or the length position convenient for installation, which can be calculated in advance and the limit block 48 is arranged on the central shaft 44 to determine, which is specifically shown in the embodiment 1), at this time, the jumper flange in the jumper pipe is connected with the external flange through the sealing pad;

[0084] The screw rod 231 is reversely screwed by the power hand carrying the electric wrench, and the two chuck connectors are closed, as shown in Figure 3 , in the process of closing, the jumper flange and the external flange are gradually pressed, and when the chuck connector is completely closed, the jumper flange in the jumper pipe is sealed with the external flange.

[0085] The power hand carries the electric wrench to rotate the screw nut 47 of the hanger 4 by a proper angle, loosens the connection position of the hanger 4 and the base, then hoists the hanger 4 and places it in the storage place, and completes the long-distance installation of the cross-over pipe.

[0086] In this embodiment, the method further comprises the following dismounting steps for dismounting the cross-over pipe in embodiment 1 between the two side to-be-connected pipes 3:

[0087] The connection mechanism 2 is remotely operated to release the connection between the first pipe section 11 and the to-be-connected pipe 3;

[0088] The pipe body 1 is remotely operated to contract to a set length;

[0089] The pipe body 1 with the connection mechanism 2 is remotely operated to be hoisted away from the two side to-be-connected pipes 3.

[0090] The remote operation can use a power hand, an electric wrench or the like, and in combination with the specific structure in embodiment 1, the installation step can be further specified as:

[0091] The hanger 4 is hoisted by the power hand to above the cross-over pipe, and the adapter 45 of the hanger 4 is connected with the base, and in this process, the assistance of the master-slave manipulator can be utilized;

[0092] The electric wrench is carried by the power hand to rotate the shaft, and the two chuck connectors are completely opened;

[0093] The electric wrench is carried by the power hand to rotate the screw nut of the hanger 4, and the distance of the cross-over pipe is shortened until the cross-over pipe is shortened to a limiting position (the shortest position or a length position convenient for dismounting, which can be calculated in advance, and a limiting block 48 is arranged on the central shaft 44 to facilitate determination);

[0094] The handle 46 of the hanger 4 is hoisted by the power hand, and the dismounting of the cross-over pipe is completed.

[0095] Embodiment 3

[0096] The radioactive waste treatment facility in this embodiment comprises a ceramic electric smelting furnace, a radioactive waste liquid feeding pipe, a glass bead feeding pipe and the cross-over pipe in embodiment 1, the ceramic electric smelting furnace is used for glass solidification of radioactive waste liquid, the radioactive waste liquid feeding pipe is used for providing treatment raw materials to the ceramic electric smelting furnace, the glass bead feeding pipe is used for providing glass beads to the ceramic electric smelting furnace, and the cross-over pipe is connected between the radioactive waste liquid feeding pipe and the ceramic electric smelting furnace and between the glass bead feeding pipe and the ceramic electric smelting furnace. When the ceramic electric smelting furnace needs to be replaced remotely, the cross-over pipe is dismounted, and then the ceramic electric smelting furnace can be hoisted and removed.

[0097] It is understood that the above embodiments are only exemplary for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and these modifications and improvements are also considered as the protection scope of the present application.

Claims

1. A jumper, characterized by: The pipeline body (1) and the connecting mechanism (2), The two ends of the pipeline body (1) are the first pipe sections (11), and the middle part is the second pipe section (12), The connecting mechanism (2) is arranged at the port of the first pipe section (11) and is used for abutting and tightly sealing the first pipe section (11) on the pipeline (3) to be connected, The second pipe section (12) is an axially telescopic pipe section, which is used for compensating the pressing stroke of the connecting mechanism (2) and the axial deviation of the first pipe section (11) and the pipeline (3) to be connected. The port of the pipeline (3) to be connected is provided with the first flange (31), and the outer surface of the first flange (31) is a slope surface gradually expanding towards the first pipe section (11), One end of the connecting mechanism (2) is sleeved outside the port of the first pipe section (11), and the other end clamps the pipeline (3) to be connected, and the clamping surface formed by the abutting surfaces of the two ends is a through hole coaxial with the first pipe section (11), So that the connecting mechanism (2) moves gradually to the side of the pipeline (3) to be connected along the slope surface of the first flange (31) and the first pipe section (11) is tightly pressed on the pipeline (3) to be connected during clamping the pipeline (3) to be connected. The connecting mechanism (2) comprises clamping petals (21), a mounting seat (22) and a pulling mechanism (23), The clamping petals (21) are provided with at least two petals, which are connected to the mounting seat (22) through the pulling mechanism (23), each clamping petal (21) can be relatively moved, and the abutting surfaces of the two clamping petals (21) abut on each other to form the clamping surface (211), The pulling mechanism (23) is used for pulling the clamping petals (21) to move and open or clamp; The clamping petals (21) are provided with three petals, two movable clamping petals (21) are hingedly connected to the other clamping petal (21), The pulling mechanism (23) comprises a screw rod (231) and a nut (232), The nut (232) is provided with two nuts, which are connected to the two movable clamping petals (21) respectively and are sleeved and connected with the screw rod (231) through opposite screw threads, The screw rod (231) is rotatably connected to the mounting seat (22), and the rotation of the screw rod (231) drives the nut (232) to drive the two movable clamping petals (21) to open around the hinged point, and simultaneously drives the movable clamping petals (21) to push the other clamping petal (21) to move and open, Or the rotation of the screw rod (231) drives the nut (232) to drive the two movable clamping petals (21) to clamp around the hinged point, and simultaneously drives the movable clamping petals (21) to pull the other clamping petal (21) to move and reset.

2. The crossover tube of claim 1, wherein: The second pipe section (12) is a flexible corrugated pipe, which is used for compensating the radial deviation, angular deviation and axial deviation of the two pipelines (3) to be connected through radial deformation, deflection and axial telescoping.

3. The crossover tube of claim 1, wherein: The clamping surface (211) is a slope surface structure matched with the outer surface of the first flange (31).

4. The crossover tube of claim 1, wherein: The port of the first pipe section (11) is provided with the second flange (111), the second flange (111) protrudes radially from the surface of the first pipe section (11), and the port of the first pipe section (11) forms a stepped shaft, The clamping surface (211) is a stepped hole matched with the port of the first pipe section (11) at one end of the first pipe section (11), so that when the clamping petals (21) are butted against each other, the one end of the clamping surface (211) is clamped and held by the stepped surface of the stepped hole, and the other end is matched with the first flange (31), so that the connecting mechanism (2) is gradually moved to the side of the to-be-connected pipeline (3) along the slope surface of the first flange (31), and the second flange (111) is pressed to the first flange (31).

5. The crossover tube of claim 4, wherein: The mounting seat (22) is divided into two parts, and the two parts are connected by fasteners.

6. The crossover tube of claim 4, wherein: The surface of the second flange (111) facing the to-be-connected pipeline (3) is provided with a groove for embedding the connecting sealing gasket (112).

7. The crossover tube of claim 1, wherein: The connecting mechanism (2) is provided with a positioning pin (24) arranged in the axial direction of the first pipe section (11), The to-be-connected pipeline (3) is provided with a support disc (32), and the support disc (32) is provided with a clamping groove for supporting the positioning pin (24) to complete the initial positioning of the cross-over pipe.

8. The crossover tube of claim 1 or 2, wherein: Further comprising a lifting device (4), The two first pipe sections (11) are each provided with a lifting point, The lifting device (4) can detachably connect the lifting points and relatively approach or move away the lifting points to realize the extension and contraction of the pipeline body (1) so as to connect the two to-be-connected pipelines (3).

9. The crossover tube of claim 8, wherein: The lifting device (4) comprises a lifting arm (41), a supporting rod (42), a supporting block (43), and a central shaft (44), The supporting block (43) is provided with two, one of which is rotatably connected to the top of the central shaft (44), and the other is connected to the bottom of the central shaft (44) through a threaded pair, The lifting arm (41) is provided with two, the top ends of which are hingedly connected to the supporting block (43) at the top of the central shaft (44), the bottom ends of which are detachably connected to the lifting points on the two first pipe sections (11), and the middle portions of which are hingedly connected to the supporting block (43) at the bottom of the central shaft (44) through the supporting rod (42), The rotation of the central shaft (44) drives the lifting of the supporting block (43), and the supporting rod (42) drives the opening and closing of the two lifting arms (41), thereby realizing the extension and contraction of the pipeline body (1).

10. The crossover tube of claim 8, wherein: The lifting point of the first pipe section (11) is provided with a connecting part (113), the connecting part (113) comprises a connecting column and a connecting sheet, and the connecting column is connected between the first pipe section (11) and the connecting sheet, The lifting device (4) comprises an adapter (45), and the adapter (45) is provided with a hook-shaped strip-shaped groove (451), the width of the strip-shaped groove (451) is greater than the diameter of the connecting column and less than the width of the connecting sheet, One end of the strip-shaped groove (451) extends to the edge of the adapter (45) to form an opening, so as to allow the connecting column to enter and exit the strip-shaped groove (451) to realize detachable connection.

11. A method of installing and removing a jumper tube, characterized by The following installation steps are included for installing the cross-over pipe of any one of claims 1-10 between the two to-be-connected pipelines (3): The pipeline body (1) is contracted to a set length by remote operation; The pipe body (1) with the connecting mechanism (2) is hoisted by remote operation to between the two side to-be-connected pipes (3) and is extended to butt against the two side to-be-connected pipes (3); The first pipe segment (11) is pressed and connected on the to-be-connected pipe (3) by remote operation of the connecting mechanism (2).

12. The method of claim 11, wherein, Further comprising the following dismounting steps for dismounting the cross pipe of any one of claims 1 to 10 between the two side to-be-connected pipes (3): The connection between the first pipe segment (11) and the to-be-connected pipe (3) is released by remote operation of the connecting mechanism (2); The pipe body (1) is contracted to a set length by remote operation; The pipe body (1) with the connecting mechanism (2) is hoisted away from the two side to-be-connected pipes (3) by remote operation.

13. A radioactive waste treatment facility, characterized by: Comprising a ceramic electric smelting furnace, a radioactive waste liquid feeding pipe, a glass bead feeding pipe and the cross pipe of any one of claims 1 to 10, The ceramic electric smelting furnace is used for glass solidification of radioactive waste liquid, The radioactive waste liquid feeding pipe is used for providing processing raw materials to the ceramic electric smelting furnace, The glass bead feeding pipe is used for providing glass beads to the ceramic electric smelting furnace, The cross pipe is connected between the radioactive waste liquid feeding pipe and the ceramic electric smelting furnace and between the glass bead feeding pipe and the ceramic electric smelting furnace.

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