Guide rail system for nuclear reactor detector assembly recovery and installation method

Abstract

The invention relates to a guide rail system for nuclear reactor detector assembly recovery and an installation method. The guide rail system comprises a supporting platform; the rail assembly comprises at least two sections of rails which are sequentially arranged in the first direction, and every two adjacent sections of rails are fixedly connected through a connecting assembly; the lap joint assembly is arranged at one end of the rail assembly and used for being connected with a supporting platform; and the adjusting platform is arranged at the other end of the rail assembly and comprises an angle adjusting mechanism and a supporting piece, and the angle adjusting mechanism is arranged between the rail assembly and the supporting piece and used for adjusting the freedom degree of the supporting piece in a self-adaptive mode. The structure that the long guide rail is disassembled and assembled in a segmented mode is beneficial to use in a limited working space, the adjusting platform is connected to one end of the rail assembly, the degree of freedom of the supporting piece relative to the rail assembly can be changed through the angle adjusting mechanism, and under the condition that the rail assembly is installed in a segmented and non-fixed mode, the service life of the long guide rail is prolonged. And the smoothness of the track assembly in the using process can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power equipment installation, and in particular to a guide rail system and an installation method for recovering a nuclear reactor detector assembly. Background Art

[0002] The detector assembly of the core measurement system is used to measure the neutron flux, temperature and water level during the operation of the nuclear reactor. During operation, the detector assembly is directly inserted into the middle of the nuclear fuel in the core. Affected by the radioactive environment of the nuclear fuel, the detector assembly itself becomes activated, so the radioactive dose rate is very high when the detector assembly is removed.

[0003] The core measurement detector assembly in the related art is inserted from the top of the reactor, that is, the detector assembly penetrates from the outside of the reactor top cover into the nuclear fuel assembly. The detector assembly is about 12 meters long and has a total of 46 pieces to measure different areas. The detector assembly can monitor the core status online in real time during the operation of the nuclear reactor. However, the life of the detector assembly is limited and it needs to be replaced regularly every 2 refueling cycles, that is, every 3 years. Usually, the detector assemblies are replaced in batches during the overhaul of nuclear power plants. Due to the high radioactive dose rate of the detector assembly, the removal of the detector assembly and related processing equipment need to fully consider the dose rate prevention and control issues during operation.

[0004] Regarding the storage of detector assemblies after removal, a coiling device is usually used to coil the detector assemblies of the highly radioactive parts, and during the coiling process, the detector assemblies can be lowered underwater for overall shielding. In order to achieve the movement of the coiling device between the surface and underwater, it is usually necessary to install additional tracks in the pool during overhaul. However, the space of the nuclear island plant in the nuclear reactor is small, and the space of the equipment in the plant is tight. The height of the plant crane is limited by the equipment and facilities on site, and the lifting height cannot be too high. In addition, the depth of the nuclear island pool is usually 12 meters, and embedded parts cannot be installed on the walls and bottom of the pool, and the additional installed tracks cannot be fixedly connected to the pool. Therefore, in this confined space and limited lifting height environment, it is difficult to complete the non-fixed installation of tracks with a vertical height of more than 12 meters in the nuclear island pool, as well as the overall lifting installation of the tracks. Summary of the invention

[0005] Based on this, it is necessary to provide a guide rail system and installation method for recovering nuclear reactor detector components in order to address the problem in related technologies that it is difficult to complete non-fixed installation of tracks with long vertical heights and overall lifting installation of tracks in confined spaces and limited lifting height environments.

[0006] The present application embodiment first provides a guide rail system for recovering a nuclear reactor detector assembly, the guide rail system comprising:

[0007] A support platform is fixed to the external mounting surface, and the support platform is configured with a bearing surface;

[0008] A guide rail structure, the guide rail structure includes a track assembly, a lap assembly and an adjustment platform; the track assembly includes at least two sections of track arranged in sequence along a first direction, and two adjacent sections of the track are fixedly connected by a connecting assembly; the lap assembly is arranged at one end of the track assembly for connecting to the support platform; the adjustment platform is arranged at the other end of the track assembly, the adjustment platform includes an angle adjustment mechanism and a support member, the angle adjustment mechanism is arranged between the track assembly and the support member, and the angle adjustment mechanism is used to adaptively adjust the degree of freedom of the support member;

[0009] Wherein, the bearing surface is used to bear any of the rails in the rail assembly.

[0010] In one of the embodiments, the angle adjustment mechanism includes a first adjustment bracket, a second adjustment bracket and a third adjustment bracket that are rotatably connected in sequence to deflect the support member in at least two different directions;

[0011] The first adjustment bracket is connected to the end of the track, and the third adjustment bracket is fixedly connected to the support member.

[0012] In one embodiment, a first rotating shaft is disposed between the first adjusting bracket and the second adjusting bracket, and the axis of the first rotating shaft extends along the second direction;

[0013] A second rotating shaft is disposed between the second adjustment bracket and the third adjustment bracket, an axis of the second rotating shaft extends along a third direction, and the first direction, the second direction and the third direction intersect each other.

[0014] In one embodiment, the angle adjustment mechanism further comprises a mounting plate, the mounting plate is fixedly connected to the first adjustment bracket, and the mounting plate is connected to an end of the track;

[0015] The support member includes a support plate.

[0016] In one embodiment, each of the rails includes two guide rods arranged in parallel, and a plurality of fixing rods for connecting the two guide rods; the fixing rod is provided at one end of the rail close to the adjustment platform, and the fixing rod is connected to the angle adjustment mechanism;

[0017] At least one end of each of the rails further includes a connecting rod, so as to connect the connecting rods of two adjacent ends of the rails through the connecting assembly.

[0018] In one of the embodiments, the connecting rod is configured with a plurality of mounting holes;

[0019] The connection assembly comprises a fastener, and the fastener passes through the mounting holes of two adjacent connection rods to fasten the two adjacent tracks.

[0020] In one embodiment, the connection assembly further includes a first connection plate, a backing plate and a second connection plate, a portion of the first connection plate is embedded in the mounting hole of the connection rod, a portion of the second connection plate is embedded in the mounting hole of an adjacent connection rod, and the backing plate is arranged between two adjacent connection rods; a through hole is formed between the first connection plate, the backing plate and the second connection plate;

[0021] The fastener includes a fastening bolt and a nut. The bolt passes through the through holes between the first connecting plate, the backing plate and the second connecting plate in sequence and is connected to the nut.

[0022] In one embodiment, at least one end of each guide rod is provided with a first positioning portion, and the end of an adjacent guide rod is provided with a second positioning portion, and the first positioning portion is adapted to be plugged into the second positioning portion.

[0023] In one embodiment, the first positioning portion is a positioning rod disposed at the end of the guide rod, and the second positioning portion is a limiting groove formed at the end of the guide rod, and the limiting groove is adapted to be plugged into the positioning rod.

[0024] In one of the embodiments, at least one roller is disposed on one side of the guide rod, and the roller is used to provide guidance and support for the track extending along the first direction.

[0025] In one of the embodiments, the support platform includes a fixing member, a displacement adjusting member and a bearing seat;

[0026] The fixing member is used for being fastened to the external mounting surface, and the displacement adjusting member is arranged between the fixing member and the bearing seat to adjust the distance between the bearing seat and the external mounting surface.

[0027] In one embodiment, the bearing seat comprises:

[0028] A carrying body, the top end of which is provided with the carrying surface;

[0029] A baffle, disposed on one side of the carrying body and close to the carrying surface, the baffle being used to limit the track assembly from sliding off the carrying body;

[0030] The positioning pin is adapted to be plugged into the positioning groove constructed on the overlap assembly.

[0031] In one of the embodiments, the bearing seat further comprises a plurality of first legs, a plurality of second legs, a plurality of supporting foot cups and a fixing frame;

[0032] The displacement adjustment member includes an adjustment plate and an adjustment bolt;

[0033] A plurality of the first legs are located at the bottom of the bearing body and are arranged close to the bearing surface, and the first legs are connected to the adjusting bolts; a plurality of the second legs are located at the bottom of the bearing body and are arranged away from the bearing surface, and the second legs are connected to the adjusting plate;

[0034] The fixing frame is used for fixing the overlapping assembly.

[0035] The present application also provides a method for installing a guide rail system, which is applied to the guide rail system for recovering a nuclear reactor detector assembly described in the above embodiment. The installation method includes:

[0036] Fixing and adjusting the support platform so that the bearing surface is in a preset position;

[0037] An adjustment platform is connected to the end of a section of the track, and the end of the track away from the adjustment platform is placed on the bearing surface, and the track is fixedly connected to the adjacent track through the connecting assembly;

[0038] Connecting multiple sections of track in sequence along the first direction until the overlapping assembly is fixedly connected to the supporting platform;

[0039] The support platform is adjusted so that the guide rail structure is located at a preset position.

[0040] The guide rail system and installation method for recovering the above-mentioned nuclear reactor detector assembly, by segmenting the track assembly into multiple sections of tracks arranged along a first direction, and fastening two adjacent sections of tracks together through a connecting assembly, thereby realizing the extension of the track assembly in the first direction. This structure for disassembling and assembling the long guide rail in sections is conducive to use in confined working spaces, and by connecting an adjustment platform to one end of the track assembly, the degree of freedom of the support member relative to the track assembly can be changed through an angle adjustment mechanism, so that the support member can adapt to contact with its corresponding abutment surface, thereby better supporting the track assembly, and while realizing segmented non-fixed installation of the track assembly, it can also effectively improve the smoothness of the track assembly during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the overall structure of a guide rail structure provided according to some embodiments of the present application.

[0042] Figure 2This is a schematic diagram of the structure of an adjustment platform provided according to some embodiments of the present application.

[0043] Figure 3 This is a schematic diagram of the structure of an angle adjustment mechanism provided according to some embodiments of the present application.

[0044] Figure 4 This is a schematic diagram of the structure of two track sections connected according to some embodiments of the present application.

[0045] Figure 5 This is a schematic diagram of the structure of one end of a track provided according to some embodiments of the present application.

[0046] Figure 6 This is a schematic diagram of the structure of the connection between the connection component and the connection plate provided according to some embodiments of the present application.

[0047] Figure 7 This is a schematic diagram of the overall structure of a guide rail system provided according to some embodiments of the present application.

[0048] Figure 8 This is a schematic diagram of the structure between the support platform and the guide rail structure provided according to some embodiments of the present application.

[0049] Fig. 9 This is a schematic diagram of the position of the support platform provided according to some embodiments of the present application.

[0050] Fig.10 This is a schematic diagram of the structure of a support platform provided according to some embodiments of the present application.

[0051] Fig.11 A schematic diagram of the structure of an adjustment platform from another perspective provided according to some embodiments of the present application.

[0052] Fig.12 A schematic diagram of the installation process of a guide rail system provided according to some embodiments of the present application.

[0053] Figure Number:

[0054] 100, track assembly; 110, track; 111, guide rod; 112, fixing rod; 113, connecting rod; 1131, mounting hole; 114, positioning rod; 115, limiting groove; 116, roller;

[0055] 200, overlap assembly;

[0056] 400, connecting assembly; 410, first connecting plate; 420, backing plate; 430, second connecting plate; 440, fastener; 441, fastening bolt; 442, nut;

[0057] 300, adjustment platform; 310, angle adjustment mechanism; 311, first adjustment bracket; 312, second adjustment bracket; 313, third adjustment bracket; 314, first rotating shaft; 315, second rotating shaft; 316, mounting plate; 320, support member;

[0058] 500, support platform; 510, fixing member; 520, displacement adjustment member; 521, adjustment plate; 522, adjustment bolt; 530, bearing seat; 531, bearing body; 5311, bearing surface; 532, baffle; 533, positioning pin; 534, first leg; 535, second leg; 536, supporting foot cup; 537, fixing frame. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0060] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0061] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0065] Regarding the storage of the detector assembly after removal, the detector assembly currently used is relatively long, but the diameter is relatively thin, only 7.5mm. If it is stored directly, the overall storage size will be large and difficult to store directly. The size of the detector assembly needs to be reduced to the size range that can be stored in the high-level container. For example, the high-radioactive detector assembly can be coiled. Usually, a coiling device is used to coil the high-radioactive part of the detector assembly, with the purpose of coiling the detector assembly into a tightly stacked coil similar to a spring, so as to facilitate placement in the high-level container.

[0066] During the above-mentioned coiling operation, in order to control the dose rate of the detector assembly, the detector assembly can be lowered underwater for overall shielding during the coiling process. In order to realize the movement of the coiling device between the water and underwater, it is necessary to install additional tracks in the pool during the overhaul. However, the space of the nuclear island plant in the nuclear reactor is small, and the space of the equipment in the plant is tight. The height of the plant crane is limited by the equipment and facilities on site, and the lifting height cannot be too high. In addition, the depth of the nuclear island pool is usually 12 meters, and embedded parts cannot be installed on the wall and bottom of the pool, and the additional installed tracks cannot be fixedly connected to the pool. Therefore, in this environment of confined space and limited lifting height, it is difficult to complete the non-fixed installation of tracks with a vertical height of more than 12 meters in the nuclear island pool, as well as the overall lifting installation of the tracks.

[0067] Based on the above problems, the present application first provides a guide rail system for recovering nuclear reactor detector components, which uses a segmented track design to complete non-fixed installation, solving the problem of difficulty in overall hoisting and installation of the guide rail. Figure 1-Figure 4 , Figure 7 , Figure 1 This is a schematic diagram of the overall structure of a guide rail structure provided according to some embodiments of the present application. Figure 2 This is a schematic diagram of the structure of an adjustment platform provided according to some embodiments of the present application. Figure 3 This is a schematic diagram of the structure of an angle adjustment mechanism provided according to some embodiments of the present application. Figure 4 This is a schematic diagram of the structure of two track sections connected according to some embodiments of the present application. Figure 7 This is a schematic diagram of the overall structure of a guide rail system provided according to some embodiments of the present application.

[0068] The guide rail system provided in the embodiment of the present application may include a support platform 500 , a track assembly 100 , a joint assembly 200 and an adjustment platform 300 .

[0069] The support platform 500 is fixed to the external mounting surface, and the support platform 500 is constructed with a bearing surface 5311; the track assembly 100 includes at least two sections of track 110 arranged in sequence along a first direction, and the two adjacent sections of track 110 are fixedly connected by a connecting assembly 400; the overlap assembly 200 is arranged at one end of the track assembly 100, and is used to connect with the support platform; the adjustment platform 300 is arranged at the other end of the track assembly 100, and the adjustment platform 300 includes an angle adjustment mechanism 310 and a support member 320, and the angle adjustment mechanism 310 is arranged between the track assembly 100 and the support member 320, and the angle adjustment mechanism 310 is used to adaptively adjust the degree of freedom of the support member 320; the bearing surface 5311 is used to bear any track 110 in the track assembly 100.

[0070] It is understandable that the first direction can be a vertical direction or a horizontal direction. If the segmented track assembly 100 is set in the vertical direction, it is suitable for scenes with limited hoisting height. If the segmented track assembly 100 is set in the horizontal direction, it is suitable for scenes with limited installation width (it is difficult to set the guide rail as a whole in the use area within the limited width space). Of course, the first direction is not limited to the vertical and horizontal directions, but can also be a direction between the two, which is not limited here.

[0071] This example takes the setting of the track assembly 100 in the nuclear island water pool as an example. Due to the special use of the nuclear island water pool, embedded parts cannot be installed on the wall and bottom of the water pool. Therefore, it is necessary to use a non-fixed installation method to install the guide rail structure in the water pool.

[0072] Specifically, the connection between multiple sections (for example, 3 sections) of track 110 can be that two sections of track 110 close to the bottom of the pool are fixedly connected by a connecting component 400, and the two sections of track 110 are pre-placed in the pool, and then the third section of track 110 is connected to the end of the track 110 in the pool at the edge of the pool. This connection method is not affected by the limited height space above the pool. Through this connection method, multiple sections of track 110, such as 4 sections, 5 sections, 6 sections, etc., can be connected in sequence. After the connection is completed, the track component 100 can be fixedly installed in the pool by fixing the overlap component 200 to the platform at the edge of the pool.

[0073] It should be noted that the number of sections of the track 110 needs to be set according to the depth of the pool and the height of the limited space above the pool, and no specific restrictions are made here.

[0074] The connection assembly 400 for connecting two adjacent sections of track 110 may be a structure such as bolts and clips that can be quickly disassembled and assembled. At the same time, the stability of the connection between the multiple sections of track 110 must be ensured to ensure the smoothness of the lifting and lowering movement of subsequent equipment (such as a winding device) on the track 110.

[0075] Considering the uneven bottom of the pool, the end of a section of track 110 near the bottom of the pool cannot be completely attached to the bottom of the pool, resulting in uneven force on the section of track 110. After repeated use of subsequent equipment, it is easy to cause the track assembly 100 to bend and deform, causing subsequent equipment to get stuck during movement. Based on this problem, this example is provided with an adjustment platform 300 at the end, i.e., the bottom, of the track assembly 100. The angle adjustment mechanism 310 in the adjustment platform 300 can adjust the degree of freedom of the support member 320 relative to the bottom of the track assembly 100 to adapt to the uneven bottom of the pool.

[0076] The support member 320 may be a bottom support plate that directly contacts the bottom surface of the pool, and the angle adjustment mechanism 310 may be a rotating shaft that connects the bottom support plate and the bottom end of the track 110. This arrangement can overcome the situation where the bottom surface of the pool is tilted toward the center. In other words, the arrangement of the rotating shaft can change a degree of freedom of the bottom support plate, and the bottom support plate can adaptively fit the bottom surface of the pool. This arrangement can form a stable support for the track 110, providing a guarantee for the smooth lifting and lowering of subsequent equipment on the track assembly 100.

[0077] It should be understood that the lap joint component 200 in this example can be set at the top of the track component 100, and the lap joint component 200 is mainly used to connect with the bottom surface of the pool edge or the support platform 500, so as to fix the entire guide rail structure on the pool edge. Specifically, the lap joint component 200 can be a lap joint rod extending in the horizontal direction, and the lap joint rod can be provided with a through hole to realize the fastening connection between the lap joint rod and the support platform 500 by fastening screws or the like.

[0078] It can be understood that the track 110 in the above-mentioned guide rail structure is arranged in sections. In order to facilitate the docking and fixation of the two sections of track 110 at the edge of the pool, a support platform 500 can be set at the edge of the pool. The support platform 500 can be fixed to the ground beside the pool by expansion screws, etc., but there is no specific limitation.

[0079] The support platform 500 is not only used to fix the overlap assembly 200 and fix the entire guide rail mechanism, but also used to temporarily place any section of the track 110 to achieve a fixed connection between two adjacent sections of the track 110 at the bearing surface 5311 of the support platform 500. In other words, the bearing surface 5311 of the support platform 500 can support the top of any track 110, such as the connecting rod 113 set at the top, and then the adjacent track 110 is docked with the positioning rod 114 and the limiting groove 115 of the track 110 to achieve the docking of adjacent connecting rods 113, and the two adjacent connecting rods 113 are fixed by the connecting assembly 400, thereby achieving a fixed connection between the adjacent tracks 110, and the above operation is repeated until the overlap assembly 200 is fixedly connected to the support platform 500.

[0080] In the present application, the track assembly 100 is segmented into multiple sections of track 110 arranged along a first direction, and two adjacent sections of track 110 are fastened and connected by a connecting assembly 400, thereby achieving extension of the track assembly 100 in the first direction. This structure of disassembling and assembling the long guide rail in sections is conducive to use in confined workspaces, and by connecting an adjustment platform 300 at one end of the track assembly 100, the degree of freedom of the support member 320 relative to the track assembly 100 can be changed through the angle adjustment mechanism 310, so that the support member 320 adapts to contact with its corresponding abutment surface, thereby being able to better support the track assembly 100, and while achieving segmented non-fixed installation of the track assembly 100, the smoothness of the track assembly 100 during use can also be effectively improved.

[0081] Next, we will combine the attached Figure 1 -Attached Fig.11 The specific structure of the guide rail system provided in the embodiment of the present application is introduced.

[0082] Combination Figure 2 and Figure 3 As shown, in some embodiments, the angle adjustment mechanism 310 includes a first adjustment bracket 311, a second adjustment bracket 312 and a third adjustment bracket 313 that are rotatably connected in sequence to deflect the support member 320 in at least two different directions; the first adjustment bracket 311 is connected to the end of the track 110, and the third adjustment bracket 313 is fixedly connected to the support member 320.

[0083] Specifically, still taking the track assembly 100 arranged along the height direction as an example, in order to overcome the unevenness of the bottom surface of the pool, the support member 320 needs to be tilted in different directions deviating from the horizontal plane. In order to realize multiple degrees of freedom of the support member 320, the first adjustment bracket 311, the second adjustment bracket 312 and the third adjustment bracket 313 can be rotatably connected in sequence, that is, the first adjustment bracket 311 and the second adjustment bracket 312 are rotatably connected, and the second adjustment bracket 312 and the third adjustment bracket 313 are rotatably connected, and the rotation directions are different. Through the combination of two degrees of freedom, the possibility of the support member 320 deflecting in multiple different directions can be realized, so as to better adapt to the uneven bottom surface of the pool.

[0084] A more specific structure is as follows: Figure 3 As shown, in some embodiments, a first rotating shaft 314 is arranged between the first adjustment bracket 311 and the second adjustment bracket 312, and the axis of the first rotating shaft 314 extends along the second direction; a second rotating shaft 315 is arranged between the second adjustment bracket 312 and the third adjustment bracket 313, and the axis of the second rotating shaft 315 extends along the third direction, and the first direction, the second direction and the third direction intersect each other.

[0085] Specifically, the first adjustment bracket 311 and the second adjustment bracket 312 can be nested and connected, and a first rotating shaft 314 is provided between the two, so that the first adjustment bracket 311 and the second adjustment bracket 312 can rotate relative to each other around the axial direction of the first rotating shaft 314, that is, the second direction. Similarly, the second adjustment bracket 312 and the third adjustment bracket 313 can be nested and connected, and a second rotating shaft 315 is provided between the two, so that the second adjustment bracket 312 and the third adjustment bracket 313 can rotate relative to each other around the axial direction of the second rotating shaft 315, that is, the third direction. It should be noted that the second direction and the third direction are perpendicular to each other and form a horizontal plane.

[0086] In order to reduce the volume of the angle adjustment mechanism 310 and save manufacturing materials, the first adjustment bracket 311, the second adjustment bracket 312 and the third adjustment bracket 313 can be miniaturized, but in order to ensure the connection with the end of the upper track 110 and the contact area with the bottom of the pool below. In some embodiments, the angle adjustment mechanism 310 also includes a mounting plate 316, which is fixedly connected to the first adjustment bracket 311, and the mounting plate 316 is connected to the end of the track 110; the support member 320 includes a support plate.

[0087] Specifically, the mounting plate 316 can be fixedly connected to the first adjustment bracket 311 by welding, gluing, bolting, etc. In addition, a plurality of mounting holes 1131 can be provided on the mounting plate 316 to be fixedly connected to the end of the track 110 by bolts, etc. In addition, the support plate needs to support the track assembly 100, and its size can be designed to be large, so as to disperse the pressure and provide a support area for other subsequent equipment.

[0088] like Figure 4 As shown, in some embodiments, each track 110 includes two guide rods 111 arranged in parallel, and a plurality of fixing rods 112 for connecting the two guide rods 111; a fixing rod 112 is provided at one end of the track 110 close to the adjustment platform 300, and the fixing rod 112 is connected to the angle adjustment mechanism 310; at least one end of each track 110 also includes a connecting rod 113, so as to connect the connecting rods 113 at the ends of two adjacent tracks 110 through a connecting assembly 400.

[0089] Specifically, the size and structure of most rails 110 can be designed in the same way to facilitate production and manufacturing. For example, a section of rail 110 can be formed by two guide rods 111 and multiple fixed rods 112. The extension direction of the two guide rods 111 is the first direction and they are arranged in parallel. The multiple fixed rods 112 are used to connect the two guide rods 111 and reinforce the structure of the rail 110. Of course, since a lap joint assembly 200 needs to be provided at the end of a rail 110 at the top, and a rail 110 at the bottom needs to be connected to the adjustment platform, the two rails 110 at both ends of the rail assembly 100 can add components on the basis of the above-mentioned rail 110 structure. For example, an extension plate is provided on the fixed rod 112 at the end of the bottom rail 110, and a perforation is constructed on the extension plate to facilitate the passage of screws and the like to connect the extension plate and the above-mentioned mounting plate 316.

[0090] In order to realize the connection between the adjacent rails 110 by the connection assembly 400, a connection rod 113 may be provided at the end of the rail 110, that is, the ends of the two guide rods 111 are connected by the connection rod 113. The connection rod 113 may be provided in a flat shape, so that the connection rods 113 at the ends of two adjacent rails 110 can be docked, and it is also convenient for the connection assembly 400 to pass through the two adjacent connection rods 113 in sequence, so as to realize the fixed connection of the two connection rods 113, that is, the two rails 110.

[0091] The specific connection method can be, Figure 5 and Figure 6 As shown, Figure 5 This is a schematic diagram of the structure of one end of a track provided according to some embodiments of the present application. Figure 6 Schematic diagram of the structure of the connection assembly and the connection plate provided according to some embodiments of the present application. In some embodiments, the connection rod 113 is configured with a plurality of mounting holes 1131; the connection assembly 400 includes a fastener 440, and the fastener 440 passes through the mounting holes 1131 of two adjacent connection rods 113 to fasten the two adjacent tracks 110.

[0092] It is understandable that the multiple mounting holes 1131 constructed on the connecting rod 113 can be symmetrically arranged or arranged in an array. When the fastener 440 passes through adjacent mounting holes 1131, the two adjacent rails 110 are fastened together, thereby ensuring the overall rigidity of the rail assembly 100.

[0093] To further enhance the rigidity of adjacent connecting rods 113 after connection, Figure 6As shown, in some embodiments, the connecting assembly 400 also includes a first connecting plate 410, a pad 420 and a second connecting plate 430, a portion of the first connecting plate 410 is embedded in the mounting hole 1131 of the connecting rod 113, a portion of the second connecting plate 430 is embedded in the mounting hole 1131 of the adjacent connecting rod 113, and the pad 420 is arranged between two adjacent connecting rods 113; a through hole is formed between the first connecting plate 410, the pad 420 and the second connecting plate 430; the fastener 440 includes a fastening bolt 441 and a nut 442, and the fastening bolt 441 passes through the through hole between the first connecting plate 410, the pad 420 and the second connecting plate 430 in sequence, and is connected to the nut 442.

[0094] Specifically, the first connecting plate 410 and the second connecting plate 430 can be set in a T shape, one end of the first connecting plate 410 is placed on the side of the connecting rod 113 away from the adjacent connecting rod 113, and the other end is embedded in the mounting hole 1131. The second connecting plate 430 is set in the same manner as the first connecting plate 410. The pad 420 can be directly set between two adjacent connecting rods 113, or partially embedded in the through hole; the first connecting plate 410, the pad 420 and the second connecting plate 430 are configured with a through hole coaxial with the through hole in the middle, so that the fastening bolt 441 passes through and sequentially connects the first connecting plate 410, the pad 420 and the second connecting plate 430, and is connected with the nut 442 after passing through the through hole, so as to achieve fixed connection of two adjacent connecting rods 113. This connection method facilitates the matching and manufacturing of the through hole and the fastening bolt 441, and can further enhance the rigidity of the adjacent connecting rods 113 after connection, so that the track assembly 100 is vertically free of bending, deformation, jamming and other problems after connection, thereby ensuring the smoothness of subsequent equipment lifting.

[0095] In order to achieve accurate alignment of two adjacent sections of track 110, thereby facilitating the installation of the above-mentioned connecting assembly 400, in some embodiments, at least one end of each guide rod 111 is provided with a first positioning portion, and the end of the adjacent guide rod 111 is provided with a second positioning portion, and the first positioning portion is adapted to be plugged into the second positioning portion.

[0096] Specifically, the opposite ends of the adjacent guide rods 111 are respectively provided with a first positioning portion and a second positioning portion, and when the two sections of the track 110 are connected, the first positioning portion and the second positioning portion can be adapted and plugged to achieve the positioning of the two sections of the track 110. Figure 5 As shown, in one example, the first positioning portion is a positioning rod 114 disposed at the end of the guide rod 111 , and the second positioning portion is a limiting groove 115 formed at the end of the guide rod 111 , and the limiting groove 115 is adapted to be plugged with the positioning rod 114 .

[0097] Specifically, positioning rods 114 can be provided at the ends of the two guide rods 111 of the same track section 110, and limiting grooves 115 can be constructed at the ends of the two guide rods 111 of the adjacent track section 110. When the two track sections 110 are docked, the positioning rods 114 are inserted into the limiting grooves 115 to achieve the positioning docking of the two track sections 110. Of course, the positioning rod 114 can also be provided at the end of one of the two guide rods 111 of the same track section 110, and the limiting groove 115 can be constructed at the end of the other, and the ends of the adjacent track sections 110 are adapted accordingly. The specific arrangement positions of the positioning rods 114 and the limiting grooves 115 are not limited here.

[0098] like Figure 5 As shown, in some embodiments, at least one roller 116 is disposed on one side of the guide rod 111 , and the roller 116 is used to provide guidance and support for the rail 110 extending along the first direction.

[0099] Specifically, in the process of moving the track 110 located at the bottom of the pool from the edge of the pool to the bottom of the pool, in order to improve its movement stability and avoid damaging the pool wall, at least one roller 116 is provided on the side of the guide rod 111 facing the pool wall. The setting of the roller 116 not only facilitates the movement of the track 110 during installation, but also provides support between the track 110 and the pool wall.

[0100] like Figure 8 As shown, Figure 8 Schematic diagram of the structure between the support platform and the guide rail structure provided according to some embodiments of the present application. In some embodiments, the support platform 500 may include a fixing member 510, a displacement adjustment member 520 and a bearing seat 530; the fixing member 510 is used to be fastened to the external mounting surface, and the displacement adjustment member 520 is arranged between the fixing member 510 and the bearing seat 530 to adjust the distance between the bearing seat 530 and the external mounting surface.

[0101] Specifically, the fixing member 510 can be a ground support plate or a ground pad 420, and the ground support plate can be fixed to the bottom surface of the pool edge by expansion bolts, etc. The displacement adjustment member 520 can be an adjustment plate 521 or an adjustment bolt 522. Of course, the adjustment plate 521 and the adjustment bolt 522 can appear at the same time. For details, please refer to the following examples. Since the bearing seat 530 needs to support the lap assembly 200, the height of the upper surface of the bearing seat 530 from the bottom of the pool needs to be equal to the overall height of the guide rail structure. Then, the displacement adjustment member 520 can adjust the height and levelness of the bearing seat 530, and adjust the upper surface of the bearing seat 530 to maintain the level, which can improve the stability of the bearing track assembly 100.

[0102] Combination Figure 9-11 As shown, Fig. 9This is a schematic diagram of the position of the support platform provided according to some embodiments of the present application. Fig.10 This is a schematic diagram of the structure of a support platform provided according to some embodiments of the present application. Fig.11 A schematic diagram of the structure of the adjustment platform under another perspective provided according to some embodiments of the present application. In some embodiments, the bearing seat 530 may include a bearing body 531, a baffle 532 and a positioning pin 533. The top of the bearing body 531 is configured with a bearing surface 5311; the baffle 532 is arranged on one side of the bearing body 531 and is arranged close to the bearing surface 5311, and the baffle 532 is used to limit the track assembly 100 from sliding off the bearing body 531; the positioning pin 533 is adapted to be plugged into the positioning groove configured on the overlap assembly 200.

[0103] Specifically, one end of the supporting body 531 needs to extend above the pool to support the end of the track 110, so that the entire track assembly 100 extends in the vertical direction, and the supporting surface 5311 can be formed on the upper surface of the supporting body 531 extending to the pool. In order to prevent the track assembly 100 set on the supporting surface 5311 from sliding off the supporting body 531, a baffle 532 can be provided at the end of the supporting body 531 extending to the pool to limit the area of ​​the supporting surface 5311.

[0104] The positioning pin 533 is arranged on the supporting body 531 and is arranged close to the supporting surface 5311. When the track assembly 100 is installed, a positioning groove can be constructed at the end of the uppermost track 110. By plugging the positioning groove and the positioning pin 533, the position of the track 110 on the supporting surface 5311 is limited, which is beneficial to the fixation of the lap assembly 200 and the supporting body 531, and realizes the precise installation of the track assembly 100 and the supporting seat 530, thereby improving the installation accuracy of the track assembly 100, which is beneficial to the stability and smoothness of the subsequent equipment operation.

[0105] To improve the rationality of the arrangement of the displacement adjustment member 520 and the bearing seat 530 at the edge of the pool, thereby providing stability for the fixed track assembly 100. Fig.10 and Fig.11 As shown, in some embodiments, the bearing seat 530 also includes a plurality of first legs 534, a plurality of second legs 535, a plurality of supporting foot cups 536 and a fixing frame 537; the displacement adjustment member 520 includes an adjustment plate 521 and an adjustment bolt 522; the plurality of first legs 534 are located at the bottom of the bearing body 531 and are arranged close to the bearing surface 5311, and the first legs 534 are connected to the adjustment bolt 522; the plurality of second legs 535 are located at the bottom of the bearing body 531 and are arranged away from the bearing surface 5311, and the second legs 535 are connected to the adjustment plate 521; the fixing frame 537 is used to fix the overlap assembly 200.

[0106] Specifically, two ground supporting plates can be set on the ground near the pool, the first one is set in the area close to the edge of the pool, and the second one is set in the area far from the edge of the pool. At least two groups of adjustment bolts 522 in the displacement adjustment member 520 are set on the first ground supporting plate, and at least two groups of adjustment plates 521 in the displacement adjustment member 520 are set on the second ground supporting plate.

[0107] The supporting body 531 is used as an integral part, and a plurality of first supporting legs are arranged at the bottom of the side close to the edge of the pool, and the first supporting legs are connected to the adjusting bolts 522; a plurality of second supporting legs are arranged at the bottom of the side away from the edge of the pool, and the second supporting legs are connected to the adjusting plate 521. The adjusting bolts 522 are used to adjust the height of the first supporting legs, and the adjusting plate 521 is used to adjust the height of the second supporting legs. In actual adjustment, the thickness of the plurality of adjusting plates 521 is different, and the number of adjusting plates 521 can be increased or decreased according to the actual height requirements, so that the height between the supporting body 531 and the pool floor plus the depth of the pool is roughly equal to the depth of the guide rail structure; then the adjusting bolts 522 are adjusted according to the height, so that the bearing surface 5311 of the supporting body 531 is in a horizontal state, and the detection of the horizontal state can be achieved by placing a level meter on the bearing surface 5311, but there is no specific limitation.

[0108] After the adjustment of the adjustment plate 521 and the adjustment bolt 522 is completed, the support foot cup 536 can be adjusted to keep the support foot cup 536 in contact with its corresponding bottom surface, thereby playing a supporting role in the contact between the supporting body 531 and the ground.

[0109] The fixing frame 537 is arranged on two opposite sides of the supporting body 531, and is used to fix the lap joint assembly 200. For example, the fixing frame 537 is constructed with a mounting surface and fastening screws. The lap joint assembly 200 includes a connecting rod, one end of which is fixed to the track 110, and the other end extends in a direction away from the track 110. The end is constructed with a through hole to achieve a fastening connection with the fixing frame 537.

[0110] The present application also provides a method for installing a guide rail system, which is used for installing a guide rail system for recovering a nuclear reactor detector assembly in the above embodiment. Fig.12 As shown, the installation method may include:

[0111] Step S101 , fixing and adjusting the supporting platform 500 so that the bearing surface 5311 is at a preset position.

[0112] Step S102 , connecting the adjustment platform 300 to the end of a section of the track 110 , placing the end of the track 110 away from the adjustment platform 300 on the bearing surface 5311 , and fixing the track 110 to the adjacent track 110 through the connecting assembly 400 .

[0113] Step S103 , connecting multiple sections of track 110 in sequence along the first direction until the overlapping assembly 200 is fixedly connected to the supporting platform 500 .

[0114] Step S104, adjusting the supporting platform 500 so that the guide rail structure is located at a preset position.

[0115] Specifically, in order to understand the quick installation steps of the multi-section track 110, this example includes three sections of track 110, which are defined as a lower track 110, a middle track 110 and an upper track 110 according to their positions in the pool. The bottom of the lower track 110 is connected to an adjustment platform 300, and the top of the upper track 110 is connected to a overlap assembly 200.

[0116] Before connection, the support platform 500 needs to be fixed and adjusted. The specific steps may be to fix the ground support plate to the ground beside the pool by expansion bolts, and then install the adjustment plate 521 and the adjustment bolts 522 on the ground support plate, and then install the supporting body 531 above the adjustment plate 521 and the adjustment bolts 522 by different legs; then, by adjusting the adjustment plate 521 and the adjustment bolts 522, the height of the supporting surface 5311 of the supporting body 531 from the ground reaches a preset value, and the supporting surface 5311 is in a horizontal state.

[0117] After the support platform 500 is installed and adjusted, the lower section rail 110 is placed on the bearing surface 5311. Specifically, the connecting plate at the top of the lower section rail 110 is placed on the bearing surface 5311, and then the middle section rail 110 is lifted to the top of the lower section rail 110. First, the positioning column and the limit groove 115 are connected to achieve the positioning connection between the middle section rail 110 and the lower section rail 110. Then, the two sections of the track 110 are fastened together through the connecting component 400, that is, the two sections of the track 110 are fastened together, and then, the middle section track 110 and the lower section track 110 are moved downward until the connecting rod 113 at the end of the middle section track 110 is located on the bearing surface 5311, and the upper section track 110 and the middle section track 110 are docked and fixed in the same way, and then the upper section track 110 and the middle section track 110 are moved downward until the top of the upper section track 110 is located on the bearing surface 5311, and inserted into the positioning pin 533, completing the fixed connection between the overlap component 200 and the bearing body 531.

[0118] It should be noted that the adjustment platform 300 is installed at the bottom of the lower track 110 before the lower track 110 is installed.

[0119] After the track assembly 100 is connected to the support platform 500, the height and levelness of the bearing body 531 can be measured according to the actual installation situation, and then the adjustment plate 521 and the adjustment bolt 522 can be fine-tuned to make the entire guide rail system in the best state. At this point, the overall installation of the track 110 system is completed. The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A guide rail system for recovering nuclear reactor detector components, characterized in that: The guide rail system comprises: A support platform is fixed to the external mounting surface, and the support platform is configured with a bearing surface; A guide rail structure, the guide rail structure includes a track assembly, a lap assembly and an adjustment platform; the track assembly includes at least two sections of track arranged in sequence along a first direction, and two adjacent sections of the track are fixedly connected by a connecting assembly; the lap assembly is arranged at one end of the track assembly for connecting to the support platform; the adjustment platform is arranged at the other end of the track assembly, the adjustment platform includes an angle adjustment mechanism and a support member, the angle adjustment mechanism is arranged between the track assembly and the support member, and the angle adjustment mechanism is used to adaptively adjust the degree of freedom of the support member; Wherein, the bearing surface is used to bear any of the rails in the rail assembly.

2. The guide rail system according to claim 1, characterized in that: The angle adjustment mechanism comprises a first adjustment bracket, a second adjustment bracket and a third adjustment bracket which are rotatably connected in sequence, so as to deflect the support member in at least two different directions; The first adjustment bracket is connected to the end of the track, and the third adjustment bracket is fixedly connected to the support member.

3. The guide rail system according to claim 2, characterized in that: A first rotating shaft is disposed between the first adjusting bracket and the second adjusting bracket, and an axis of the first rotating shaft extends along a second direction; A second rotating shaft is disposed between the second adjustment bracket and the third adjustment bracket, an axis of the second rotating shaft extends along a third direction, and the first direction, the second direction and the third direction intersect each other.

4. The guide rail system according to claim 2, characterized in that: The angle adjustment mechanism further comprises a mounting plate, wherein the mounting plate is fixedly connected to the first adjustment bracket, and the mounting plate is connected to an end of the track; The support member includes a support plate.

5. The guide rail system according to claim 4, characterized in that: Each of the rails comprises two guide rods arranged in parallel, and a plurality of fixing rods for connecting the two guide rods; the fixing rod is provided at one end of the rail close to the adjustment platform, and the fixing rod is connected to the angle adjustment mechanism; At least one end of each of the rails further includes a connecting rod, so as to connect the connecting rods of two adjacent ends of the rails through the connecting assembly.

6. The guide rail system according to claim 5, characterized in that: The connecting rod is configured with a plurality of mounting holes; The connection assembly comprises a fastener, and the fastener passes through the mounting holes of two adjacent connection rods to fasten the two adjacent tracks.

7. The guide rail system according to claim 6, characterized in that: The connecting assembly further comprises a first connecting plate, a backing plate and a second connecting plate, wherein a portion of the first connecting plate is embedded in the mounting hole of the connecting rod, a portion of the second connecting plate is embedded in the mounting hole of an adjacent connecting rod, and the backing plate is arranged between two adjacent connecting rods; a through hole is formed between the first connecting plate, the backing plate and the second connecting plate; The fastener includes a fastening bolt and a nut. The fastening bolt passes through the through holes between the first connecting plate, the backing plate and the second connecting plate in sequence and is connected to the nut.

8. The guide rail system according to any one of claims 5 to 7, characterized in that: At least one end of each guide rod is provided with a first positioning portion, and the end of an adjacent guide rod is provided with a second positioning portion, and the first positioning portion is adapted to be plugged into the second positioning portion.

9. The guide rail system according to claim 8, characterized in that: The first positioning portion is a positioning rod arranged at the end of the guide rod, and the second positioning portion is a limiting groove formed at the end of the guide rod, and the limiting groove is adapted to be plugged with the positioning rod.

10. The guide rail system according to any one of claims 5 to 7, characterized in that: At least one roller is arranged on one side of the guide rod, and the roller is used to provide guidance and support for the track to extend along the first direction.

11. The guide rail system according to any one of claims 5 to 7, characterized in that: The support platform includes a fixing member, a displacement adjusting member and a bearing seat; The fixing member is used for being fastened to the external mounting surface, and the displacement adjusting member is arranged between the fixing member and the bearing seat to adjust the distance between the bearing seat and the external mounting surface.

12. The guide rail system according to claim 11, characterized in that The bearing seat comprises: A carrying body, the top end of which is provided with the carrying surface; A baffle, disposed on one side of the carrying body and close to the carrying surface, the baffle being used to limit the track assembly from sliding off the carrying body; The positioning pin is adapted to be plugged into the positioning groove constructed on the overlap assembly.

13. The guide rail system according to claim 12, characterized in that The bearing seat also includes a plurality of first legs, a plurality of second legs, a plurality of supporting foot cups and a fixing frame; The displacement adjustment member includes an adjustment plate and an adjustment bolt; A plurality of the first legs are located at the bottom of the bearing body and are arranged close to the bearing surface, and the first legs are connected to the adjusting bolts; a plurality of the second legs are located at the bottom of the bearing body and are arranged away from the bearing surface, and the second legs are connected to the adjusting plate; The fixing frame is used for fixing the overlapping assembly.

14. A method for installing a guide rail system, applied to the guide rail system for recovering a nuclear reactor detector assembly as claimed in any one of claims 1 to 13, characterized in that: The installation method comprises: Fixing and adjusting the support platform so that the bearing surface is in a preset position; An adjustment platform is connected to the end of a section of the track, and the end of the track away from the adjustment platform is placed on the bearing surface, and the track is fixedly connected to the adjacent track through the connecting assembly; Connecting multiple sections of track in sequence along the first direction until the overlapping assembly is fixedly connected to the supporting platform; The support platform is adjusted so that the guide rail structure is located at a preset position.

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